$153 Cheap Alaska Airlines flights Eugene (EUG) to St. Louis (STL)

View $153 flight on Sat, Feb 14, 2026Opens in a new window

$153 Cheap Alaska Airlines flights Eugene (EUG) to St. Louis (STL)

Prices were available within the past 7 days and start at $153 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Eugene (EUG) to St. Louis (STL)

September is typically the cheapest month to fly

From $222 - $609 per traveler.

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $420
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $420
Flights from Eugene (EUG) to St. Louis (STL)
Origin airport
Eugene
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Delta
Distance
1729 mi

Frequently asked questions

How much is an Alaska Airlines flight from Mahlon Sweet Field Airport (EUG) to Lambert-St. Louis Intl. Airport (STL)?
Landing cheap one-way Alaska Airlines flights from EUG to STL from $153 on Expedia is simple — just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from EUG to STL with Alaska Airlines?
January is one of the cheapest months to jet away to St. Louis with Alaska Airlines. You could also find great prices on return and one-way fares in February.
What is the cheapest time to book flights from Mahlon Sweet Field Airport (EUG) to Lambert-St. Louis Intl. Airport (STL) with Alaska Airlines?
Start searching one to three months ahead of your travel date to find cheap fares on Alaska Airlines flights from Mahlon Sweet Field Airport (EUG) to Lambert-St. Louis Intl. Airport (STL). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Mahlon Sweet Field Airport (EUG) to Lambert-St. Louis Intl. Airport (STL)?
Simply enter your dates, press search and use the "Nonstop" filter on Expedia to find any direct flights from EUG to STL with Alaska Airlines or other airlines.
What is the earliest Alaska Airlines flight from EUG to STL?
To find the earliest departure from EUG to STL with Alaska Airlines, filter your search by "Early Morning" and "Morning." Booking an early flight generally means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in St. Louis?
Alaska Airlines flights from Mahlon Sweet Field Airport (EUG) to St. Louis come in to land at Lambert-St. Louis Intl. Airport (STL). This is the main entry point here.
Why fly with Alaska Airlines from EUG to STL?
Alaska Airlines makes flying from EUG to STL more enjoyable with top-tier customer service and an excellent in-flight experience. You even have the chance to collect points with Mileage Plan. Remember to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Mahlon Sweet Field Airport (EUG) to Lambert-St. Louis Intl. Airport (STL)?
Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that time. For further details about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to change your itinerary without being charged, check the "No cancel fee" or "Changes included" filter when planning your next getaway.

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*Available to One Key members.