HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$447+ Cheap flights from Grand Forks to St. Louis (GFK - 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — STL
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Grand Forks 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 Grand Forks to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Grand Forks (GFK) 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 June 23, 2025.

Round-trip from

$447
(Delta)

Popular in

February

Cheapest in

May

Average price

$523
From Grand Forks to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Grand Forks to St. Louis

Cheapest flights from Grand Forks to St. Louis
Explore the most affordable flight options available from Grand Forks to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2025.

This Delta deal was found by Cheapflights users on 6/23. 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.
Tue 7/85:40 amGFK - STL
1 stop4h 53mDelta
Sat 7/126:30 amSTL - GFK
1 stop5h 07mDelta
Deal found 6/23$447

Cheapflights Fare Finder

Customize your flight search to find flights from Grand Forks 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 June 23, 2025.
Use the filters below to find and compare flights from Grand Forks to St. Louis that are best for you.

Fly from

Grand Forks

Fly to

St. Louis

Route

Depart

Return

Price

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Tue 7/8

5:40 am-10:33 am

1 stop4h 53m

Lambert-St Louis

Sat 7/12

6:30 am-11:37 am

1 stop5h 07m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/23

Best time to book a flight from Grand Forks to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Grand Forks with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Grand Forks to St. Louis

What is the cheapest month to book a flight from Grand Forks to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Grand Forks to St. Louis (average of $311). Flying from Grand Forks to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 23, 2025.
Delta
8.0
Very good
7,965 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,965 reviews
Delta
8.0
Very good
7,965 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Grand Forks to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Grand Forks to St. Louis round-trip?

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $447. You may be able to fly from Grand Forks to St. Louis for 7% less than the average price by searching for this airline.

  • Can I find deals for flights from Grand Forks to St. Louis that include hotel bookings?

    Yes. In addition to deals on Grand Forks to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Grand Forks to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grand Forks to St. Louis.

  • Can I find deals for business class flights from Grand Forks to St. Louis?

    Yes. Cheapflights offers flight deals from Grand Forks to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Grand Forks to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Grand Forks to St. Louis (average of $311). Flying from Grand Forks to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Grand Forks?

Book flights to Grand Forks if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
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.

Top airline flying from Grand Forks to St. Louis

Discover the top airline that operate flights from Grand Forks 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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$416Average$453FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.