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$779+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
FSM — LHR
Mar 3 — Mar 101
Tue 3/3
Tue 3/10
1 adult, Economy
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Cheap flight deals from Fort Smith to Heathrow

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 February 1, 2026.

This American Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 5/26:00 am
FSM
-
LHR
1 stop20h 35m
American Airlines
Sat 5/910:05 am
LHR
-
FSM
1 stop14h 06m
American Airlines
Deal found 1/30$779
This Finnair deal was found by Cheapflights users on 1/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:10 am
FSM
-
LHR
1 stop17h 45m
Multiple Airlines
Sun 5/1012:55 pm
LHR
-
FSM
1 stop16h 44m
Multiple Airlines
Deal found 1/31$780
This Finnair deal was found by Cheapflights users on 1/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:07 am
FSM
-
LHR
1 stop25h 08m
Multiple Airlines
Tue 3/242:45 pm
LHR
-
FSM
1 stop24h 04m
Multiple Airlines
Deal found 1/31$796
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 3/176:24 pm
FSM
-
LHR
1 stop12h 51m
American Airlines
Tue 3/2410:05 am
LHR
-
FSM
2 stops17h 27m
American Airlines
Deal found 1/31$929
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Sat 5/26:41 pm
FSM
-
LHR
1 stop29h 39m
American Airlines
Sun 5/108:55 am
LHR
-
FSM
1 stop20h 44m
American Airlines
Deal found 1/31$936
This KAYAK deal was found by Cheapflights users on 1/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:41 pm
FSM
-
LHR
1 stop13h 44m
Multiple Airlines
Sat 5/98:55 am
LHR
-
FSM
1 stop15h 16m
Multiple Airlines
Deal found 1/31$954
This Finnair deal was found by Cheapflights users on 1/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2010:19 am
FSM
-
LHR
1 stop20h 56m
Multiple Airlines
Fri 3/272:45 pm
LHR
-
FSM
1 stop14h 04m
Multiple Airlines
Deal found 1/30$1,101

Find flight deals from Fort Smith to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Fort Smith (FSM) to Heathrow (LHR). 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 February 1, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$779
(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
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Fort Smith to Heathrow 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 February 1, 2026.
Use the filters below to find and compare flights from Fort Smith to London Heathrow Airport that are best for you.

Fly from

Fort Smith

Fly to

Heathrow

Route

Depart

Return

Price

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Sat 5/2

6:00 am-8:35 am

1 stop20h 35m

London Heathrow

Sat 5/9

10:05 am-6:11 pm

1 stop14h 06m

$779

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Sat 5/2

11:10 am-10:55 am

1 stop17h 45m

London Heathrow

Sun 5/10

12:55 pm-11:39 pm

1 stop16h 44m

$780

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Fri 5/1

11:10 am-2:25 pm

1 stop21h 15m

London Heathrow

Sun 5/10

10:05 am-6:11 pm

1 stop14h 06m

$780

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Sat 5/2

11:10 am-8:05 am

2 stops14h 55m

London Heathrow

Sun 5/10

1:35 pm-11:39 pm

2 stops16h 04m

$785

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Tue 3/17

6:07 am-12:15 pm

1 stop25h 08m

London Heathrow

Tue 3/24

2:45 pm-9:49 am

1 stop24h 04m

$796

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Tue 3/17

6:24 pm-12:15 pm

1 stop12h 51m

London Heathrow

Tue 3/24

10:05 am-10:32 pm

2 stops17h 27m

$929

Fort SmithLondon

FSM - LHR

FSMLHR

Fort Smith

Fri 5/1

6:41 pm-2:25 pm

1 stop13h 44m

London Heathrow

Sat 5/9

8:55 am-6:11 pm

1 stop15h 16m

$954

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

  • 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 90-95% 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.
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 Fort Smith to London Heathrow Airport

What is the cheapest month to book a flight from Fort Smith to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from Fort Smith to London Heathrow Airport (average of $506). Flying from Fort Smith to London Heathrow Airport in June is currently the most expensive (average of $1,236). 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.

Related info for your journey

Find useful and relevant information for your journey from Fort Smith to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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?

    American Airlines can get you from Fort Smith to London Heathrow Airport in just under 20h 35m. Your travel time can differ by up to . There are 4509 mi between Fort Smith and London Heathrow Airport.

  • 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.

  • What is the cheapest month to book a flight from Fort Smith to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Fort Smith to London Heathrow Airport (average of $506). Flying from Fort Smith to London Heathrow Airport in June is currently the most expensive (average of $1,236). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Croydon
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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