Cheap flights from St. Louis to International Falls from $372

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to International Falls departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to International Falls (STL-INL)

Cheap round-trip flights

Delta Logo
6:00 am - 10:21 amSTL-INL
4h 21m1 stop
Delta Logo
10:56 am - 4:45 pmINL-STL
5h 49m1 stop
$372Delta
Find Deal
Fri, Sep 12 - Fri, Sep 19
Delta Logo
6:00 am - 10:21 amSTL-INL
4h 21m1 stop
Delta Logo
3:50 pm - 11:24 pmINL-STL
7h 34m2 stops
$623Delta
Find Deal
Fri, Sep 12 - Fri, Sep 19
Delta Logo
6:01 am - 2:13 pmSTL-INL
8h 12m2 stops
Delta Logo
3:50 pm - 11:24 pmINL-STL
7h 34m2 stops
$1,069Delta
Find Deal
Fri, Sep 12 - Fri, Sep 19
Delta Logo
6:00 am - 10:20 amSTL-INL
4h 20m1 stop
Delta Logo
10:55 am - 2:30 pmINL-STL
3h 35m1 stop
$1,310Delta
Find Deal
Thu, Aug 28 - Mon, Sep 1
Delta Logo
6:00 am - 10:20 amSTL-INL
4h 20m1 stop
Delta Logo
10:55 am - 10:02 pmINL-STL
11h 07m2 stops
$1,465Delta
Find Deal
Thu, Aug 28 - Mon, Sep 1

Delta flights from St. Louis to International Falls

Our best Delta deals on St. Louis to International Falls flight tickets
Delta
Sep 12
STL6:00 amLambert-St Louis
4h 21m
1 stop
INL10:21 amFalls Intl
Sep 19
INL10:56 amFalls Intl
5h 49m
1 stop
STL4:45 pmLambert-St Louis
Delta
Sep 12
STL6:00 amLambert-St Louis
4h 21m
1 stop
INL10:21 amFalls Intl
Sep 19
INL3:50 pmFalls Intl
7h 34m
2 stops
STL11:24 pmLambert-St Louis
Delta
Sep 12
STL6:01 amLambert-St Louis
8h 12m
2 stops
INL2:13 pmFalls Intl
Sep 19
INL3:50 pmFalls Intl
7h 34m
2 stops
STL11:24 pmLambert-St Louis

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to International Falls 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, momondo users made 832,500 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from St. Louis to International Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Fri 9/12

6:00 am-10:21 am

1 stop4h 21m

Falls Intl

Fri 9/19

10:56 am-4:45 pm

1 stop5h 49m

$372

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Fri 9/12

6:00 am-10:21 am

1 stop4h 21m

Falls Intl

Fri 9/19

3:50 pm-11:24 pm

2 stops7h 34m

$623

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Fri 9/12

6:01 am-2:13 pm

2 stops8h 12m

Falls Intl

Fri 9/19

3:50 pm-11:24 pm

2 stops7h 34m

$1,069

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Thu 8/28

6:00 am-10:20 am

1 stop4h 20m

Falls Intl

Mon 9/1

10:55 am-2:30 pm

1 stop3h 35m

$1,310

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Thu 8/28

6:00 am-10:20 am

1 stop4h 20m

Falls Intl

Mon 9/1

10:55 am-10:02 pm

2 stops11h 07m

$1,465

St. LouisInternational Falls

STL - INL

STLINL

Lambert-St Louis

Fri 8/29

6:00 am-10:20 am

1 stop4h 20m

$610

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to International Falls from

How to get the cheapest flight ticket from St. Louis to International Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to International Falls?

The cheapest day to depart from St. Louis to International Falls is on a Saturday when prices can be found for as low as $563. Flights from St. Louis to International Falls on a Sunday will generally be more expensive and average around $703. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from St. Louis to International Falls

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to International Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to International Falls (STL to INL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to International Falls

Best Price Found

$610

Fastest flight time

4h 20m

Direct flights

None

Airports in International Falls

1 airport
The best one-way flight to International Falls from St. Louis in the past 72 hours is $610. The best round-trip flight deal from St. Louis to International Falls found on momondo in the last 72 hours is $372.
The fastest flight from St. Louis to International Falls takes 4h 20m
There are no direct flights from St. Louis to International Falls. Popular non-direct route for this connection is Lambert-St Louis Airport - Falls Intl Airport.
There is 1 airport near International Falls: Falls Intl (INL)
  • How far is Lambert-St Louis to Falls Intl by plane?

    The straight-line distance from Lambert-St Louis to Falls Intl is 707.0 mi. By plane, this route typically takes 4h 20m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Falls Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Falls Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Falls Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Falls Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Falls Intl Airport.

  • What documentation or ID do you need to fly to Falls Intl Airport?

    The travel and health documents required for your trip to Falls Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Falls Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to International Falls?

Best airlines flying from St. Louis to International Falls

Compare and see reviews for airlines that fly from St. Louis to International Falls with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $351Free CancellationRating
8.0
7,980 reviews
Search Delta flights

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All flight searches from St. Louis to International Falls on momondo can be filtered to show those which offer flexible booking policies.

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momondo helps you find the best flight between St. Louis and International Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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1 adult
Tue 8/19
Tue 8/26

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