$319+ Cheap flights from St. Louis to Bismarck (STL - BIS)
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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BIS
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Bismarck 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 St. Louis to Bismarck
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Best
Last-minute
Cheapest flights from St. Louis to BismarckExplore the most affordable flight options available from St. Louis to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from St. Louis to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:21 am -
1 stop5h 15m
Mon 9/281:13 pm -
1 stop7h 31m
Deal found 9/4![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:00 am -
1 stop7h 36m
Sun 9/271:13 pm -
1 stop7h 31m
Deal found 9/4![American Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:30 am -
1 stop5h 31m
Sat 1/28:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:30 am -
1 stop5h 31m
Sat 1/28:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/253:25 pm -
1 stop4h 08m
Wed 12/308:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$373
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/253:25 pm -
1 stop4h 08m
Thu 12/318:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:32 am -
2 stops11h 27m
Sun 11/11:11 pm -
1 stop6h 11m
Deal found 9/3![American Airlines logo]()
$410
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:20 pm -
1 stop7h 39m
Tue 10/132:07 pm -
1 stop5h 41m
Deal found 9/2![American Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/253:25 pm -
1 stop4h 08m
Tue 12/2912:41 pm -
1 stop10h 55m
Deal found 9/3![Delta logo]()
$432
Best flights from St. Louis to BismarckDiscover carefully curated flight deals from St. Louis to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from St. Louis to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:00 am -
1 stop6h 33m
Sun 12/61:11 pm -
1 stop6h 11m
Deal found 9/2![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:30 am -
1 stop5h 31m
Sat 1/28:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/303:00 pm -
1 stop5h 10m
Tue 2/21:08 pm -
1 stop7h 51m
Deal found 9/6![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:00 am -
1 stop7h 36m
Sun 10/41:13 pm -
1 stop7h 31m
Deal found 9/3![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:32 am -
2 stops11h 27m
Sun 11/11:11 pm -
1 stop6h 11m
Deal found 9/3![American Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:30 am -
1 stop5h 31m
Mon 12/283:54 pm -
1 stop18h 41m
Deal found 9/3![Delta logo]()
$472
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:15 am -
1 stop4h 17m
Sun 9/205:40 pm -
1 stop5h 36m
Deal found 9/3![Delta logo]()
$529
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:45 pm -
1 stop17h 16m
Sat 1/28:03 am -
1 stop6h 42m
Deal found 9/3![Delta logo]()
$538
Last-minute flights from St. Louis to BismarckDiscover last-minute flight deals from St. Louis to Bismarck. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Bismarck. Data last updated September 7, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:15 am -
1 stop4h 17m
Sun 9/205:40 pm -
1 stop5h 36m
Deal found 9/3![Delta logo]()
$529
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:00 am -
1 stop7h 36m
Sun 9/271:13 pm -
1 stop7h 31m
Deal found 9/4![American Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:21 am -
1 stop5h 15m
Mon 9/281:13 pm -
1 stop7h 31m
Deal found 9/4![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:00 am -
2 stops8h 27m
Sun 10/41:57 pm -
2 stops10h 30m
Deal found 9/3![American Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 9/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:15 am -
1 stop4h 17m
Sun 10/115:00 am -
1 stop3h 53m
Deal found 9/4![Delta logo]()
$466
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:20 pm -
1 stop7h 39m
Tue 10/132:07 pm -
1 stop5h 41m
Deal found 9/2![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 9/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:00 am -
1 stop7h 23m
Wed 10/142:07 pm -
2 stops10h 12m
Deal found 9/5![American Airlines logo]()
$498
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:32 am -
2 stops11h 27m
Sun 11/11:11 pm -
1 stop6h 11m
Deal found 9/3![American Airlines logo]()
$410
Find flight deals from St. Louis to Bismarck
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Bismarck (BIS). 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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (American Airlines) |
Popular in | February |
Cheapest in | October |
Average price | $363 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Bismarck 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 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from St. Louis to Bismarck that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Thu 12/3
6:00 am-12:33 pm
1 stop6h 33m
Bismarck
Sun 12/6
1:11 pm-7:22 pm
1 stop6h 11m
$319
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Fri 10/2
5:00 am-12:36 pm
1 stop7h 36m
Bismarck
Sun 10/4
1:13 pm-8:44 pm
1 stop7h 31m
$319
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Thu 12/31
6:30 am-12:01 pm
1 stop5h 31m
Bismarck
Sat 1/2
8:03 am-2:45 pm
1 stop6h 42m
$367
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Thu 10/29
11:32 am-10:59 pm
2 stops11h 27m
Bismarck
Sun 11/1
1:11 pm-7:22 pm
1 stop6h 11m
$410
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Sat 1/30
3:00 pm-8:10 pm
1 stop5h 10m
Bismarck
Tue 2/2
1:08 pm-8:59 pm
1 stop7h 51m
$419
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Fri 12/25
6:30 am-12:01 pm
1 stop5h 31m
Bismarck
Mon 12/28
3:54 pm-10:35 am
1 stop18h 41m
$472
Quickest round-trip
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Fri 9/18
6:15 am-10:32 am
1 stop4h 17m
Bismarck
Sun 9/20
5:40 pm-11:16 pm
1 stop5h 36m
$529
St. LouisBismarck
STL Lambert-St Louis - BIS Bismarck
STLBIS
Lambert-St Louis
Wed 12/30
6:45 pm-12:01 pm
1 stop17h 16m
Bismarck
Sat 1/2
8:03 am-2:45 pm
1 stop6h 42m
$538
Sorted by cheapest first
Compare providers for flights from St. Louis to Bismarck
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 St. Louis to Bismarck in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Bismarck flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Bismarck flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Bismarck flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Bismarck 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 St. Louis-Bismarck 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 St. Louis to Bismarck
Have a flexible travel schedule? Discover the best time to fly to Bismarck from St. Louis with our price prediction graph.
STL-BIS
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 Bismarck
Get insights into the airlines that provide service to Bismarck. 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 Bismarck. Reviews last updated September 7, 2026.
Read through reviews of airlines operating flights from St. Louis to Bismarck, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Overall
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Bismarck. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Bismarck
Explore flights to Bismarck departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Complete your trip
Complete your trip to Bismarck by adding a car rental and/or hotel reservation to your travel itinerary.
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St. Louis and Bismarck flights
Browse other St. Louis and Bismarck flight options. Last updated on September 7, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from St. Louis to Bismarck
Discover the top airline that operate flights from St. Louis to Bismarck. 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 7,457,451 searches. Data last updated September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$363 | FlexibilityNo cancel fee | On-timeN/A |