$400+ Cheap flights from Bellingham to St. Louis (BLI - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — STL
Sep 5 — Sep 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Bellingham to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Bellingham to St. Louis
Cheapest
Best
Last-minute
Cheapest flights from Bellingham to St. LouisExplore the most affordable flight options available from Bellingham to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
Explore the most affordable flight options available from Bellingham to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:01 pm -
2 stops27h 16m
Fri 9/1812:12 pm -
1 stop10h 00m
Deal found 8/2![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:58 pm -
2 stops14h 42m
Thu 10/295:32 pm -
1 stop20h 38m
Deal found 8/5![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:01 pm -
1 stop26h 49m
Fri 9/1112:17 pm -
1 stop9h 55m
Deal found 8/5![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:59 pm -
2 stops18h 11m
Mon 9/2112:17 pm -
1 stop9h 55m
Deal found 8/5![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:01 pm -
1 stop19h 31m
Sun 9/208:10 pm -
2 stops19h 01m
Deal found 8/6![Multiple Airlines logo]()
$538
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:26 pm -
1 stop16h 55m
Sun 9/206:08 pm -
1 stop6h 23m
Deal found 8/6![Alaska Airlines logo]()
$561
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:18 pm -
1 stop26h 41m
Fri 10/304:42 pm -
1 stop27h 56m
Deal found 8/3![Alaska Airlines logo]()
$569
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:19 pm -
2 stops19h 51m
Fri 9/116:08 pm -
2 stops26h 38m
Deal found 8/5![Alaska Airlines logo]()
$573
Best flights from Bellingham to St. LouisDiscover carefully curated flight deals from Bellingham to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Bellingham to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:59 pm -
1 stop16h 28m
Mon 9/2112:17 pm -
1 stop9h 55m
Deal found 8/5![Multiple Airlines logo]()
$512
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:26 pm -
1 stop16h 55m
Sun 9/206:08 pm -
1 stop6h 23m
Deal found 8/6![Alaska Airlines logo]()
$561
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:18 pm -
1 stop26h 41m
Fri 10/304:42 pm -
1 stop27h 56m
Deal found 8/1![Alaska Airlines logo]()
$569
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:19 pm -
2 stops19h 51m
Fri 9/116:08 pm -
2 stops26h 38m
Deal found 8/5![Alaska Airlines logo]()
$573
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:26 pm -
2 stops19h 44m
Mon 9/213:19 pm -
2 stops33h 12m
Deal found 8/5![Alaska Airlines logo]()
$608
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:00 am -
2 stops29h 21m
Fri 9/186:08 pm -
2 stops31h 36m
Deal found 8/2![Alaska Airlines logo]()
$628
Last-minute flights from Bellingham to St. LouisDiscover last-minute flight deals from Bellingham to St. Louis. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Bellingham to St. Louis. Data last updated August 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:01 pm -
1 stop26h 49m
Fri 9/1112:17 pm -
1 stop9h 55m
Deal found 8/5![Multiple Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:19 pm -
2 stops19h 51m
Fri 9/116:08 pm -
2 stops26h 38m
Deal found 8/5![Alaska Airlines logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:01 pm -
2 stops27h 16m
Fri 9/1812:12 pm -
1 stop10h 00m
Deal found 8/2![Multiple Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:00 am -
2 stops29h 21m
Fri 9/186:08 pm -
2 stops31h 36m
Deal found 8/2![Alaska Airlines logo]()
$628
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:59 pm -
2 stops18h 11m
Mon 9/2112:17 pm -
1 stop9h 55m
Deal found 8/5![Multiple Airlines logo]()
$496
This Alaska Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:26 pm -
2 stops19h 44m
Mon 9/213:19 pm -
2 stops33h 12m
Deal found 8/5![Alaska Airlines logo]()
$608
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:01 pm -
1 stop19h 31m
Sun 9/208:10 pm -
2 stops19h 01m
Deal found 8/6![Multiple Airlines logo]()
$538
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:26 pm -
1 stop16h 55m
Sun 9/206:08 pm -
1 stop6h 23m
Deal found 8/6![Alaska Airlines logo]()
$561
Find flight deals from Bellingham to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Bellingham (BLI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $400 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Bellingham to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 6, 2026.
Use the filters below to find and compare flights from Bellingham to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Thu 9/17
4:59 pm-11:27 am
1 stop16h 28m
Lambert-St Louis
Mon 9/21
12:17 pm-8:12 pm
1 stop9h 55m
$512
Quickest round-trip
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Fri 9/18
7:26 pm-2:21 pm
1 stop16h 55m
Lambert-St Louis
Sun 9/20
6:08 pm-10:31 pm
1 stop6h 23m
$561
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Mon 10/26
7:18 pm-11:59 pm
1 stop26h 41m
Lambert-St Louis
Fri 10/30
4:42 pm-6:38 pm
1 stop27h 56m
$569
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Fri 9/4
7:19 pm-5:10 pm
2 stops19h 51m
Lambert-St Louis
Fri 9/11
6:08 pm-6:46 pm
2 stops26h 38m
$573
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Thu 9/17
7:26 pm-5:10 pm
2 stops19h 44m
Lambert-St Louis
Mon 9/21
3:19 pm-10:31 pm
2 stops33h 12m
$608
BellinghamSt. Louis
BLI Bellingham - STL Lambert-St Louis
BLISTL
Bellingham
Fri 9/11
7:00 am-2:21 pm
2 stops29h 21m
Lambert-St Louis
Fri 9/18
6:08 pm-11:44 pm
2 stops31h 36m
$628
Sorted by cheapest first
Compare providers for flights from Bellingham to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bellingham to St. Louis in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Bellingham-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bellingham-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bellingham-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bellingham-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bellingham-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Bellingham to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Bellingham with our price prediction graph.
BLI-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated August 6, 2026.
See what other customers who have flown with Alaska Airlines from Bellingham to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Bellingham to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Bellingham
Popular flights
St. Louis flight routes
Alternative routes for Bellingham to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Bellingham to St. Louis by cabin class
Find flights from Bellingham to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Bellingham and St. Louis flights
Browse other Bellingham and St. Louis flight options. Last updated on August 6, 2026.
Other flights from Bellingham
Browse through other flights departing from Bellingham. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Top airline flying from Bellingham to St. Louis
Discover the top airline that operate flights from Bellingham to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$320 | Average$655 | FlexibilityNo cancel fee | On-time75% |