$440 Cheap Flights from St. Louis (STL) to Aomori (AOJ)

View $440 flight on Tue, Sep 2, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Aomori Airport (AOJ)

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Cheap Flights from St. Louis to Aomori (STL-AOJ)

Prices were available within the past 7 days and start at $440 for one-way flights and $2,412 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Japan Airlines
Sat, Dec 20 - Wed, Dec 31
STL
St. Louis
AOJ
Aomori
$2,412 Roundtrip, found 4 days ago
$2,412
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Sat, Dec 20 from St. Louis to Aomori, returning Wed, Dec 31, priced at $2,412 found 4 days ago
Flights from St. Louis (STL) to Aomori (AOJ)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Aomori
Roundtrip price
$2,412
Distance
6071 mi

St. Louis to Aomori Flights

The cheapest times to fly from St. Louis to Aomori

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

 

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

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

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 Aomori in 2025. You can also book with separate airlines for your outbound and return journeys, from $440 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 Aomori 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 Aomori 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.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ) cost?
Discover the latest flight deals from STL to AOJ by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to AOJ?
The cheapest flights from STL to AOJ are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to AOJ?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from STL to AOJ. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from STL to AOJ?
You’ll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Aomori Airport (AOJ)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time 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.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ) last-minute?
Waiting until just before your departure to book a ticket from STL to AOJ often results in higher prices. While it’s possible to find some last-minute deals, there’s no guarantee. Keep your travel schedule open for the best chance of scoring a bargain.
Is it cheaper to book a STL to AOJ flight and hotel package?
Opting for a STL to AOJ flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of accommodations and then add activities, flights 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 Lambert-St. Louis Intl. Airport (STL) to Aomori Airport (AOJ)?
In most instances, you’re able to reschedule or cancel your STL to AOJ flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline’s fees and rules on flight changes, or if you need more information, head to our Customer Service portal.

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*Available to One Key members.