How long is the flight from Fort Smith to London Heathrow Airport?

British Airways and American Airlines can get you from Fort Smith to London Heathrow Airport in just under 18h 49m. Your travel time can differ by up to 3h 30m. There are 4509 mi between Fort Smith and London Heathrow Airport. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest time of day to fly from FSM to LHR?

When flying from Fort Smith to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Fort Smith-London Heathrow Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Fort Smith-London Heathrow Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Fort Smith-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Fort Smith-London Heathrow Airport flights, Cheapflights users trust Ovago the most. Ovago 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 Fort Smith-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Fort Smith to London Heathrow?

For a flight from Fort Smith to London Heathrow, you will be flying from Fort Smith. Fort Smith (FSM) is just 3.8 mi from the center of the city. Fort Smith is the only Fort Smith airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Fort Smith on a regular basis.

Can I find deals for flights from Fort Smith to Heathrow that include hotel bookings?

Yes. In addition to deals on Fort Smith to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Fort Smith to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Fort Smith to Heathrow.

Can I find deals for business class flights from Fort Smith to Heathrow?

Yes. Cheapflights offers flight deals from Fort Smith to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$571+ Cheap Flights from Fort Smith to London Heathrow Airport

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Cheap flight deals from Fort Smith to Heathrow

Cheapest

Best

Last-minute

One-way

Cheapest flights from Fort Smith to Heathrow
Explore the most affordable flight options available from Fort Smith to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.

Sun 9/2710:06 am -

1 stop20h 44m

Wed 10/78:55 am -

1 stop21h 00m

Deal found 9/13

$895

Sun 9/2710:06 am -

1 stop18h 49m

Tue 10/612:55 pm -

1 stop17h 00m

Deal found 9/13

$943

Sun 10/257:52 pm -

1 stop11h 23m

Sun 11/12:45 pm -

1 stop15h 08m

Deal found 9/10

$945

Sat 9/265:16 pm -

1 stop11h 39m

Tue 10/612:55 pm -

1 stop17h 00m

Deal found 9/13

$993

Sun 10/257:52 pm -

1 stop11h 23m

Sun 11/12:45 pm -

1 stop15h 08m

Deal found 9/13

$1,001

Mon 9/285:16 pm -

1 stop11h 39m

Wed 10/78:15 am -

2 stops17h 07m

Deal found 9/13

$1,074

Mon 9/285:16 pm -

1 stop15h 09m

Thu 10/84:25 pm -

1 stop13h 30m

Deal found 9/13

$1,109

Mon 9/285:16 pm -

1 stop13h 34m

Tue 10/64:25 pm -

1 stop13h 30m

Deal found 9/13

$1,110

Sun 9/2710:06 am -

2 stops15h 44m

Wed 10/72:10 pm -

2 stops15h 45m

Deal found 9/13

$1,113

Tue 9/295:16 pm -

1 stop13h 34m

Fri 10/94:25 pm -

1 stop13h 30m

Deal found 9/13

$1,115

Best flights from Fort Smith to Heathrow
Discover carefully curated flight deals from Fort Smith to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.

Sun 10/257:52 pm -

1 stop11h 23m

Sun 11/12:45 pm -

1 stop15h 08m

Deal found 9/10

$945

Wed 9/305:16 pm -

1 stop15h 09m

Tue 10/612:55 pm -

1 stop17h 00m

Deal found 9/13

$1,115

Wed 9/3010:06 am -

1 stop22h 19m

Sat 10/104:25 pm -

1 stop23h 12m

Deal found 9/13

$1,165

Wed 9/3010:06 am -

1 stop22h 19m

Mon 10/58:55 am -

1 stop21h 00m

Deal found 9/13

$1,165

Fri 9/2510:06 am -

1 stop22h 19m

Sat 10/108:55 am -

1 stop13h 42m

Deal found 9/13

$1,215

Sun 9/2710:06 am -

2 stops18h 09m

Tue 10/69:10 am -

2 stops20h 45m

Deal found 9/13

$2,121

Mon 9/286:00 am -

2 stops18h 40m

Tue 10/69:10 am -

2 stops20h 45m

Deal found 9/13

$2,121

Last-minute flights from Fort Smith to Heathrow
Discover last-minute flight deals from Fort Smith to Heathrow. Data last updated September 13, 2026 and is based on user searches.

Sat 9/265:16 pm -

1 stop11h 39m

Tue 10/612:55 pm -

1 stop17h 00m

Deal found 9/13

$993

Sun 9/2710:06 am -

1 stop20h 44m

Wed 10/78:55 am -

1 stop21h 00m

Deal found 9/13

$895

Sun 9/2710:06 am -

1 stop18h 49m

Tue 10/612:55 pm -

1 stop17h 00m

Deal found 9/13

$943

Sun 9/2710:06 am -

2 stops15h 44m

Wed 10/72:10 pm -

2 stops15h 45m

Deal found 9/13

$1,113

Mon 9/285:16 pm -

1 stop11h 39m

Wed 10/78:15 am -

2 stops17h 07m

Deal found 9/13

$1,074

Mon 9/285:16 pm -

1 stop15h 09m

Thu 10/84:25 pm -

1 stop13h 30m

Deal found 9/13

$1,109

Mon 9/285:16 pm -

1 stop13h 34m

Tue 10/64:25 pm -

1 stop13h 30m

Deal found 9/13

$1,110

Tue 9/295:16 pm -

1 stop13h 34m

Thu 10/84:25 pm -

1 stop13h 30m

Deal found 9/13

$1,115

Sun 10/257:52 pm -

1 stop11h 23m

Sun 11/12:45 pm -

1 stop15h 08m

Deal found 9/10

$945

Sun 10/257:52 pm -

1 stop11h 23m

Sun 11/12:45 pm -

1 stop15h 08m

Deal found 9/13

$1,001

Find flight deals from Fort Smith to Heathrow

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$895 (American Airlines)
One-way from	$571 (American Airlines)

Provider with most accurate pricing for Fort Smith-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for Fort Smith-London Heathrow flights.

Search Deals

From Fort Smith to London Heathrow

Search Deals

One-way flight from Fort Smith to London Heathrow

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Fort Smith to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Tue 9/22

6:00 am-6:20 am

1 stop18h 20m

London Heathrow

Wed 12/31

12:00 am-5:00 pm

Nonstop0h 00m

$571

Quickest round-trip

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Wed 11/11

10:03 am-6:35 am

2 stops14h 32m

London Heathrow

Wed 12/31

12:00 am-5:00 pm

Nonstop0h 00m

$571

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Sun 10/25

7:52 pm-12:15 pm

1 stop11h 23m

London Heathrow

Sun 11/1

2:45 pm-11:53 pm

1 stop15h 08m

$945

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Wed 9/30

5:16 pm-2:25 pm

1 stop15h 09m

London Heathrow

Tue 10/6

12:55 pm-11:55 pm

1 stop17h 00m

$1,115

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Wed 9/30

10:06 am-2:25 pm

1 stop22h 19m

London Heathrow

Sat 10/10

4:25 pm-9:37 am

1 stop23h 12m

$1,165

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Wed 9/30

10:06 am-2:25 pm

1 stop22h 19m

London Heathrow

Mon 10/5

8:55 am-11:55 pm

1 stop21h 00m

$1,165

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Fri 9/25

10:06 am-2:25 pm

1 stop22h 19m

London Heathrow

Sat 10/10

8:55 am-4:37 pm

1 stop13h 42m

$1,215

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Sun 9/27

10:06 am-10:15 am

2 stops18h 09m

London Heathrow

Tue 10/6

9:10 am-11:55 pm

2 stops20h 45m

$2,121

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Mon 9/28

6:00 am-6:40 am

2 stops18h 40m

London Heathrow

Tue 10/6

9:10 am-11:55 pm

2 stops20h 45m

$2,121

Fort SmithLondon

FSM Fort Smith - LHR London Heathrow

FSMLHR

Fort Smith

Thu 12/3

6:00 am-9:30 am

2 stops21h 30m

London Heathrow

Wed 12/31

12:00 am-5:00 pm

Nonstop0h 00m

$3,971

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 12 resultsSorted by cheapest first

Compare providers for flights from Fort Smith to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Fort Smith to Heathrow in September.

Provider	Price Accuracy	Trust Score*
Ovago	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Fort Smith-London Heathrow Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Fort Smith-London Heathrow Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Fort Smith-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Fort Smith-London Heathrow Airport flights, Cheapflights users trust Ovago the most. Ovago 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 Fort Smith-London Heathrow Airport 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 Fort Smith to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Fort Smith with our price prediction graph.

FSM-LHR

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.

Related info for your journey

What airport do you fly from for flights from Fort Smith to London Heathrow?
For a flight from Fort Smith to London Heathrow, you will be flying from Fort Smith. Fort Smith (FSM) is just 3.8 mi from the center of the city. Fort Smith is the only Fort Smith airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Fort Smith on a regular basis.
How long is the flight from Fort Smith to London Heathrow Airport?
British Airways and American Airlines can get you from Fort Smith to London Heathrow Airport in just under 18h 49m. Your travel time can differ by up to 3h 30m. There are 4509 mi between Fort Smith and London Heathrow Airport. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Fort Smith to Heathrow that include hotel bookings?
Yes. In addition to deals on Fort Smith to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Fort Smith to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Fort Smith to Heathrow.
Can I find deals for business class flights from Fort Smith to Heathrow?
Yes. Cheapflights offers flight deals from Fort Smith to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$571+ Cheap flights from Fort Smith (FSM) to Heathrow (LHR)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Fort Smith to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Fort Smith to Heathrow

Cheapest flights from Fort Smith to HeathrowExplore the most affordable flight options available from Fort Smith to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.

Explore the most affordable flight options available from Fort Smith to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.

Best flights from Fort Smith to HeathrowDiscover carefully curated flight deals from Fort Smith to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.

Discover carefully curated flight deals from Fort Smith to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.

Last-minute flights from Fort Smith to HeathrowDiscover last-minute flight deals from Fort Smith to Heathrow. Data last updated September 13, 2026 and is based on user searches.

Discover last-minute flight deals from Fort Smith to Heathrow. Data last updated September 13, 2026 and is based on user searches.

One-way flights from Fort Smith to HeathrowSearch for one-way flight options from Fort Smith to Heathrow. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.

Search for one-way flight options from Fort Smith to Heathrow. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.

Find flight deals from Fort Smith to Heathrow

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Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Fort Smith to London Heathrow Airport that are best for you.

Compare providers for flights from Fort Smith to Heathrow

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 Fort Smith to Heathrow in September.

Best time to book a flight from Fort Smith to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Fort Smith with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from Fort Smith to London Heathrow?

How long is the flight from Fort Smith to London Heathrow Airport?

Can I find deals for flights from Fort Smith to Heathrow that include hotel bookings?

How can I find direct flights from Fort Smith to Heathrow?

Can I find deals for business class flights from Fort Smith to Heathrow?

Traveling to a place near London Heathrow Airport?

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 for Fort Smith to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Fort Smith to Heathrow by cabin class

Find flights from Fort Smith to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 13, 2026.

Fort Smith and Heathrow flights

Browse other Fort Smith and Heathrow flight options. Last updated on September 13, 2026.

Other flights from Fort Smith

Browse through other flights departing from Fort Smith. Flights are based on user searches made on Cheapflights and were last updated on September 13, 2026.

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Cheapest flights from Fort Smith to Heathrow
Explore the most affordable flight options available from Fort Smith to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.

Best flights from Fort Smith to Heathrow
Discover carefully curated flight deals from Fort Smith to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.

Last-minute flights from Fort Smith to Heathrow
Discover last-minute flight deals from Fort Smith to Heathrow. Data last updated September 13, 2026 and is based on user searches.

One-way flights from Fort Smith to Heathrow
Search for one-way flight options from Fort Smith to Heathrow. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.