Cheap Flights from St. Louis (STL) to Oceanside (OCN)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Oceanside, CA (OCN)

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Alternative airports near Oceanside

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

Select flight to McClellan-Palomar CLD. Cheapest option available. Average driving time to city center is 19 minutes. Flights from $431
CLD
McClellan-Palomar
Cheapest
Average driving time to city center19 min
Flights from $431

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN) cost?
Grab a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN)?
The cheapest month to fly from STL to OCN is , when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from STL to OCN. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to OCN?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN) that takes off before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego County from Lambert-St. Louis Intl. Airport (STL)?
San Diego Intl. Airport (SAN) is the only airport in San Diego County with direct flights from Lambert-St. Louis Intl. Airport (STL). Compare the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN) last-minute?
Booking your plane ticket from STL to OCN right before your trip is generally more expensive. However, if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a STL to OCN flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to OCN flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Oceanside, CA (OCN)?
Generally, it's possible to cancel or reschedule your STL to OCN flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Oceanside
Distance
1550 mi

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St. Louis to Oceanside Flights

The cheapest times to fly from St. Louis to Oceanside

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 Oceanside are during the month of . You can find some of the cheapest flights from St. Louis to Oceanside with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Oceanside: 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 Oceanside

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 Oceanside in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Oceanside 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 Oceanside 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 Oceanside Flights

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