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 $437. You may be able to fly from Grand Forks to St. Louis for 9% less than the average price by searching for this airline.

What is the cheapest day to fly from Grand Forks to St. Louis?

Travelers seeking maximum savings on their Grand Forks to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 23% when planning your travel around this day of the week.

What is the cheapest month to fly from Grand Forks to St. Louis?

May is one of the best times of the year to fly to St. Louis from Grand Forks. Prices for May average $484 per person but you can even find prices for as low as $416. The most expensive prices can be found in the month of February. Opting for a May flight can save you 23% on your journey compared to booking in February

What is the cheapest time of day to fly from GFK to STL?

Unlike in the morning, when flights are generally more expensive, you can save up to 11% on flights from Grand Forks to St. Louis by exploring options for tickets at noon.

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.

$437+ Flights from Grand Forks to St. Louis

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Cheap flight deals from Grand Forks to St. Louis

Round-trip from	$437 (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).

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Average for round-trip flights in June 2025

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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 12, 2025.

Thu 7/1012:17 pmGFK - STL

1 stop4h 25mDelta

Tue 7/156:30 amSTL - GFK

1 stop5h 07mDelta

Deal found 6/10

$437

Best flights from Grand Forks to St. Louis
Discover carefully curated flight deals from Grand Forks to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Thu 7/1012:17 pmGFK - STL

1 stop4h 25mDelta

Tue 7/156:30 amSTL - GFK

1 stop5h 07mDelta

Deal found 6/10

$437

Last-minute flights from Grand Forks to St. Louis
Discover last-minute flight deals from Grand Forks to St. Louis. Data last updated June 12, 2025 and is based on user searches.

Thu 7/1012:17 pmGFK - STL

1 stop4h 25mDelta

Tue 7/156:30 amSTL - GFK

1 stop5h 07mDelta

Deal found 6/10

$437

Cheapflights Fare Finder

Use the filters below to find and compare flights from Grand Forks to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Grand ForksSt. Louis

GFK - STL

GFKSTL

Grand Forks

Thu 7/10

12:17 pm-4:42 pm

1 stop4h 25m

Lambert-St Louis

Tue 7/15

6:30 am-11:37 am

1 stop5h 07m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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

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

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

Delta

8.0

Very good

7,946 reviews

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

7,946 reviews

Delta

8.0

Very good

7,946 reviews

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

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 $437. You may be able to fly from Grand Forks to St. Louis for 9% 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.

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Top airline flying from Grand Forks to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$416	Average$453	FlexibilityNo cancel fee	On-timeN/A

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$437+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Grand Forks to St. Louis

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Find flight deals from Grand Forks to St. Louis

Cheapest flights from Grand Forks to St. LouisExplore 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 12, 2025.

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 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Grand Forks to St. Louis that are best for you.

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.

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?

Rainfall in St. Louis by month

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

Temperature in St. Louis by month

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

Reviews of airlines servicing St. Louis

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?

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

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

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

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

Traveling to a place near Grand Forks?

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Alternative routes for Grand Forks to St. Louis

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Top airline flying from Grand Forks to St. Louis

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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 12, 2025.