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$728+ Cheap flights from Waterloo, IA (ALO) 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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — LHR
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Waterloo to Heathrow

Cheapest flights from Waterloo to Heathrow
Explore the most affordable flight options available from Waterloo to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This American Airlines deal was found by Cheapflights users on 2/17. 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.
Fri 4/33:10 pm
ALO
-
LHR
1 stop15h 05m
American Airlines
Fri 4/109:45 am
LHR
-
ALO
1 stop20h 04m
American Airlines
Deal found 2/17$728
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 3/45:20 am
ALO
-
LHR
1 stop24h 15m
American Airlines
Sun 3/82:10 pm
LHR
-
ALO
1 stop29h 30m
American Airlines
Deal found 2/17$880
This Finnair deal was found by Cheapflights users on 2/20. 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.
Mon 8/35:00 am
ALO
-
LHR
1 stop19h 50m
Multiple Airlines
Sun 8/1611:10 am
LHR
-
ALO
1 stop18h 22m
Multiple Airlines
Deal found 2/20$920
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 8/33:09 pm
ALO
-
LHR
2 stops12h 56m
American Airlines
Sun 8/161:10 pm
LHR
-
ALO
1 stop16h 22m
American Airlines
Deal found 2/20$925
This KAYAK deal was found by Cheapflights users on 2/21. 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.
Wed 3/113:10 pm
ALO
-
LHR
1 stop10h 45m
British Airways
Wed 3/183:45 pm
LHR
-
ALO
1 stop13h 08m
British Airways
Deal found 2/21$957
This KAYAK deal was found by Cheapflights users on 2/21. 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.
Tue 3/105:20 am
ALO
-
LHR
1 stop20h 35m
Multiple Airlines
Tue 3/1712:10 pm
LHR
-
ALO
2 stops16h 43m
Multiple Airlines
Deal found 2/21$965
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Wed 3/113:10 pm
ALO
-
LHR
2 stops13h 30m
American Airlines
Wed 3/181:10 pm
LHR
-
ALO
2 stops15h 43m
American Airlines
Deal found 2/21$966
This KAYAK deal was found by Cheapflights users on 2/21. 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.
Wed 3/113:10 pm
ALO
-
LHR
2 stops15h 05m
British Airways
Tue 3/178:50 am
LHR
-
ALO
2 stops20h 03m
British Airways
Deal found 2/21$969
This American Airlines deal was found by Cheapflights users on 2/21. 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 3/105:20 am
ALO
-
LHR
1 stop20h 35m
American Airlines
Wed 3/1812:10 pm
LHR
-
ALO
2 stops16h 43m
American Airlines
Deal found 2/21$999
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 3/43:15 pm
ALO
-
LHR
2 stops16h 10m
Multiple Airlines
Sun 3/83:45 pm
LHR
-
ALO
1 stop13h 08m
Multiple Airlines
Deal found 2/17$1,078

Find flight deals from Waterloo to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Waterloo (ALO) 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 21, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$728
(American Airlines)
Provider with most accurate pricing for Waterloo-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Waterloo-London (LON) flights.
Search Deals
From Waterloo to London Heathrow
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo 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 21, 2026.
Use the filters below to find and compare flights from Waterloo to London Heathrow Airport that are best for you.

Fly from

Waterloo

Fly to

Heathrow

Route

Depart

Return

Price

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Fri 4/3

3:10 pm-12:15 pm

1 stop15h 05m

London Heathrow

Fri 4/10

9:45 am-11:49 pm

1 stop20h 04m

$728

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Wed 3/4

5:20 am-11:35 am

1 stop24h 15m

London Heathrow

Sun 3/8

2:10 pm-2:40 pm

1 stop29h 30m

$880

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Mon 8/3

5:00 am-6:50 am

1 stop19h 50m

London Heathrow

Sun 8/16

11:10 am-11:32 pm

1 stop18h 22m

$920

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Mon 8/3

3:09 pm-10:05 am

2 stops12h 56m

London Heathrow

Sun 8/16

1:45 pm-11:32 pm

2 stops15h 47m

$925

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Wed 3/11

3:10 pm-6:55 am

1 stop10h 45m

London Heathrow

Wed 3/18

3:45 pm-11:53 pm

1 stop13h 08m

$957

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Tue 3/10

5:20 am-6:55 am

1 stop20h 35m

London Heathrow

Tue 3/17

12:10 pm-11:53 pm

2 stops16h 43m

$965

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Wed 3/4

3:15 pm-1:25 pm

2 stops16h 10m

London Heathrow

Sun 3/8

3:45 pm-11:53 pm

1 stop13h 08m

$1,078

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Wed 3/11

3:10 pm-8:35 am

1 stop12h 25m

London Heathrow

Thu 3/19

10:40 am-11:53 pm

2 stops18h 13m

$1,166

WaterlooLondon

ALO - LHR

ALOLHR

Waterloo

Sun 3/15

3:10 pm-10:25 am

1 stop14h 15m

London Heathrow

Sat 3/21

2:45 pm-11:53 pm

2 stops38h 08m

$1,846

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Best time to book a flight from Waterloo to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Waterloo 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 Waterloo to London Heathrow Airport

What is the cheapest month to book a flight from Waterloo, Iowa to London Heathrow Airport?

Currently, August is the cheapest month in which you can book a flight from Waterloo, Iowa to London Heathrow Airport (average of $582). Flying from Waterloo, Iowa to London Heathrow Airport in February is currently the most expensive (average of $820). 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 Waterloo 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 Waterloo to London Heathrow?

    Located just 5.3 mi from the city center, Waterloo is the airport most travelers will use when flying to London Heathrow from Waterloo. Booking flights from Waterloo (ALO) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.

  • How long is the flight from Waterloo, Iowa to London Heathrow Airport?

    American Airlines can get you from Waterloo, Iowa to London Heathrow Airport in just under 15h 05m. Your travel time can differ by up to . The distance between Waterloo, Iowa and London Heathrow Airport is about 4081 mi.

  • Can I find deals for flights from Waterloo to Heathrow that include hotel bookings?

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

  • How can I find direct flights from Waterloo to Heathrow?

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

  • Can I find deals for business class flights from Waterloo to Heathrow?

    Yes. Cheapflights offers flight deals from Waterloo 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 Waterloo, Iowa to London Heathrow Airport?

    Currently, August is the cheapest month in which you can book a flight from Waterloo, Iowa to London Heathrow Airport (average of $582). Flying from Waterloo, Iowa to London Heathrow Airport in February is currently the most expensive (average of $820). 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
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne

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