$167 Cheap Flights from St. Louis (STL) to Eugene (EUG)

View $167 flight on Sat, Sep 5, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Mahlon Sweet Field Airport (EUG)

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Cheap Flights from St. Louis to Eugene (STL-EUG)

Prices were available within the past 7 days and start at $167 for one-way flights and $300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Aug 12 - Mon, Aug 17
STL
St. Louis
EUG
Eugene
$300 Roundtrip, found 1 day ago
$300
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 12 from St. Louis to Eugene, returning Mon, Aug 17, priced at $300 found 1 day ago
Delta
Thu, Aug 27 - Tue, Sep 1
STL
St. Louis
EUG
Eugene
$310 Roundtrip, found 2 days ago
$310
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Aug 27 from St. Louis to Eugene, returning Tue, Sep 1, priced at $310 found 2 days ago
Delta
Wed, Aug 12 - Mon, Aug 17
STL
St. Louis
EUG
Eugene
$320 Roundtrip, found 1 day ago
$320
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 12 from St. Louis to Eugene, returning Mon, Aug 17, priced at $320 found 1 day ago
Delta
Sat, Sep 12 - Thu, Sep 17
STL
St. Louis
EUG
Eugene
$333 Roundtrip, found 2 days ago
$333
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 12 from St. Louis to Eugene, returning Thu, Sep 17, priced at $333 found 2 days ago
Southwest Airlines
Thu, Aug 27 - Tue, Sep 1
STL
St. Louis
EUG
Eugene
$333 Roundtrip, found 2 days ago
$333
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Aug 27 from St. Louis to Eugene, returning Tue, Sep 1, priced at $333 found 2 days ago
Delta
Sat, Sep 12 - Thu, Sep 17
STL
St. Louis
EUG
Eugene
$338 Roundtrip, found 2 days ago
$338
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 12 from St. Louis to Eugene, returning Thu, Sep 17, priced at $338 found 2 days ago
Southwest Airlines
Thu, Aug 27 - Tue, Sep 1
STL
St. Louis
EUG
Eugene
$349 Roundtrip, found 2 days ago
$349
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Aug 27 from St. Louis to Eugene, returning Tue, Sep 1, priced at $349 found 2 days ago
American Airlines
Wed, Aug 12 - Mon, Aug 17
STL
St. Louis
EUG
Eugene
$355 Roundtrip, found 1 day ago
$355
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Aug 12 from St. Louis to Eugene, returning Mon, Aug 17, priced at $355 found 1 day ago
Alaska Airlines
Wed, Aug 12 - Mon, Aug 17
STL
St. Louis
EUG
Eugene
$361 Roundtrip, found 1 day ago
$361
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Aug 12 from St. Louis to Eugene, returning Mon, Aug 17, priced at $361 found 1 day ago
United
Tue, Sep 1 - Wed, Sep 2
STL
St. Louis
EUG
Eugene
$366 Roundtrip, found 5 days ago
$366
Roundtrip
found 5 days ago
Select United flight, departing Tue, Sep 1 from St. Louis to Eugene, returning Wed, Sep 2, priced at $366 found 5 days ago

Alternative airports near Eugene

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mahlon Sweet Field EUG. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $478
EUG
Mahlon Sweet Field
CheapestClosest
Average driving time to city center14 min
Flights from $478

What you need to know for your flight from Lambert-St. Louis Intl. to Eugene

St. Louis (STL) to Eugene (EUG) at a glance

Fly with a range of airlines offering routes from St. Louis (STL) to Eugene (EUG) on this domestic short-haul journey. Explore options from both full-service and low-cost carriers to discover the itinerary that aligns best with your budget, schedule, and travel plans while you visit Eugene's renowned attractions and neighborhoods. Check out the essential details for flights from Lambert-St. Louis International Airport (STL) to Eugene Airport (EUG).

  • Fastest (typical) flight duration: around 5h 30m in-flight, plus roughly 1h 30m layover with one stop
  • Route distance: roughly 1,700 miles (2,740 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $130–$475, depending on seasonality and how far ahead you book

Flights from Lambert-St. Louis International Airport (STL) to Eugene Airport (EUG)

Based on recent traveler bookings, here are the top airlines flying from St. Louis to Eugene, favored for one-stop and multi-stop flights. Common layover spots include Denver International Airport (DEN) with about a 1 hour and 15 minute layover, Seattle-Tacoma International Airport (SEA) at approximately 2 hours, and Salt Lake City International Airport (SLC) with around 1 hour and 30 minutes. This variety allows you to mix and match price, total travel time, and cabin class to discover the best itinerary for your journey.

  • United: This full-service airline provides passengers with a convenient one-stop option. One-way fares generally fall between $160 and $540. United handles about 30% of departures on this route, featuring an in-flight duration of 5h 30m and a total travel time of around 7 hours, including layover.
  • Southwest Airlines: A budget-friendly carrier, Southwest offers both one-stop and multi-stop services. One-way ticket prices typically range from $175 to $470. This airline makes up about 20% of departures, with a standard one-stop flight taking 5h 30m and an overall journey time of about 7 hours.
  • Alaska Airlines: As a full-service airline, Alaska Airlines presents a one-stop travel experience, with one-way fares usually between $130 and $510. accounting for roughly 18% of departures. The in-flight time is around 5h 30m, leading to a total journey duration of approximately 7 hours, including layover.
  • American Airlines: This full-service carrier provides one-stop service, with one-way fares that typically range from $130 to $500. It represents about 16% of departures on this route, featuring an in-flight duration of 5h 30m and a total travel time of roughly 7 hours, including layover.
  • Delta: Operating as a full-service airline, Delta offers one-stop travel options with one-way fares generally ranging from $135 to $680. It accounts for approximately 15% of departures, featuring an in-flight time of 5h 30m and a total journey time of about 7 hours, including layover.

Travelers flying from St. Louis to Eugene have the option to upgrade their experience, with both Delta and United offering first class and premium economy service for a more comfortable journey.

Best time to fly from St. Louis (STL) to Eugene (EUG)

The most popular months for travelers flying from St. Louis to Eugene are March, April, and July, when peak temperatures in Eugene reach up to 67.3°F in July. If you prefer quieter travel, consider November, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 44.8°F. For better deals, April usually offers the lowest average one-way fare around $240. Flight availability peaks in July, with approximately 13 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: April usually offers good deals with average one-way fare around $240, roughly 17% cheaper than the yearly average.
  • More budget-friendly months to fly: October, September, and November typically offer average one-way fares of around $244.
  • Most flight options: July has the highest number of flights from St. Louis to Eugene, with approximately 13 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January41.0°F (5.0°C)Low9$385
February41.2°F (5.1°C)Low7$312
March43.9°F (6.6°C)High9$373
April48.2°F (9.0°C)High10$240
May54.7°F (12.6°C)Average9$297
June60.6°F (15.9°C)Average9$283
July67.3°F (19.6°C)High13$288
August68.2°F (20.1°C)Average9$260
September62.4°F (16.9°C)Average8$243
October53.2°F (11.8°C)Average9$242
November44.8°F (7.1°C)Low9$246
December39.7°F (4.3°C)Average9$325

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from St. Louis (STL) to Eugene (EUG)

  • St. Louis to Eugene (SUS-EUG): The Spirit of St. Louis Airport (SUS) is located approximately 16 miles from Lambert-St. Louis International Airport (STL).
  • St. Louis to North Bend (STL-OTH): Roughly 71 miles from Eugene Airport (EUG), you’ll find Southwest Oregon Regional Airport (OTH).
  • Springfield to Eugene (SPI-EUG): Abraham Lincoln Capital Airport (SPI) lies about 85 miles away from Lambert-St. Louis International Airport (STL).

How to find the best prices for flights from St. Louis (STL) to Eugene (EUG)

Getting some of the best deals on flights from St. Louis to Eugene is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking at least two months in advance, although most travelers book 2 to 8 weeks ahead. Evening departures (6 PM to 12 AM) often offer lower prices, while morning flights (5 AM to 12 PM) are the most popular. Additionally, flying on Monday provides both cheaper prices and is the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Eugene hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Eugene Airport from Lambert-St. Louis International Airport

Eugene welcomes travelers from St. Louis with a range of transport options based on price, convenience, and proximity. Here's how to reach Eugene efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Eugene, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Eugene Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Eugene Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Eugene Airport, Eugene Station, a train station, is located about 7.4 miles from the airport.

Frequently asked questions

How much does a flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) cost?
You can find cheap one-way flights from $167 and cheap return flights from $300 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) with Expedia. One-way flights generally range between $194 and $1023, and roundtrip flights usually range from $396 to $1515. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
January is the cheapest month to fly from St. Louis, MO (STL) to Eugene, OR (EUG), with average round-trip fares around $332. This is about 30% lower than the average price throughout the year, as travel demand typically decreases after the holiday season. Other cheap months to fly from St. Louis to Eugene include April and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
Enter STL to EUG and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
Southwest Airlines is one of the cheapest airlines offering connecting flights from St. Louis (STL) to Eugene (EUG), with round-trip tickets starting from around $267 with a layover in Harry Reid Intl. (LAS). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
The best time to fly from St. Louis to Eugene is typically in January or April, with average return flight prices around $332. January is ideal as it follows the holiday rush, leading to lower fares, while April offers pleasant spring weather, making it a great time to explore the Pacific Northwest.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) typically departs at around 5:00 AM, operated by American Airlines and Alaska Airlines. This flight is available in December, making it a good option for winter travel. An early departure helps you maximize your time in Eugene. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) are in the early morning, from 6am to 9am. About 42% of passengers prefer this time window. Many major carriers, including Alaska Airlines, Southwest Airlines, and Delta, offer flights during this window. This timing works well because it allows you to maximize your day upon arrival in Eugene.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
A flight from STL to EUG with a layover takes around 6 hours 50 minutes, with the route covering approximately 1,730 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
First class is available on flights from STL to EUG. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Eugene from Lambert-St. Louis Intl. (STL)?
If you're planning to travel to Eugene from Lambert-St. Louis Intl. (STL), you can fly into Mahlon Sweet Field (EUG) Some flights may connect through major hubs like O'Hare Intl. (ORD), Denver Intl. (DEN), Harry Reid Intl. (LAS) before reaching Eugene. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) Eugene Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Eugene, OR (EUG) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Eugene
Roundtrip price
$299
Distance
1729 mi

Book with confidence

St. Louis to Eugene Flights

The cheapest times to fly from St. Louis to Eugene

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Eugene are during the month of August. You can find some of the cheapest flights from St. Louis to Eugene with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Eugene

Sunday is one of the best days to book for cheap flights from St. Louis to Eugene: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Eugene

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Eugene in 2026. You can also book with separate airlines for your outbound and return journeys, from $167 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Eugene flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Eugene airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Eugene Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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