$233+ Cheap flights from Maine to Heathrow (LHR)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Maine to Heathrow 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
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Cheapest flights from Maine to HeathrowExplore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This LEVEL deal was found by Cheapflights users on 4/15. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:50 pm
BOS
- LHR
1 stop15h 15m
LEVEL
Wed 10/148:50 pm
LHR
- BOS
1 stop29h 25m
LEVEL
Deal found 4/15![LEVEL logo]()
$551
This LEVEL deal was found by Cheapflights users on 4/15. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:00 pm
BOS
- LHR
1 stop16h 05m
LEVEL
Tue 10/69:55 am
LHR
- BOS
1 stop16h 20m
LEVEL
Deal found 4/15![LEVEL logo]()
$562
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:50 pm
BOS
- LHR
1 stop28h 20m
LEVEL
Tue 10/139:55 am
LHR
- BOS
1 stop16h 20m
LEVEL
Deal found 4/14![LEVEL logo]()
$568
This LEVEL deal was found by Cheapflights users on 4/16. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:00 pm
BOS
- LHR
1 stop16h 05m
LEVEL
Wed 9/308:50 pm
LHR
- BOS
1 stop29h 25m
LEVEL
Deal found 4/16![LEVEL logo]()
$569
This Mytrip deal was found by Cheapflights users on 4/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:50 pm
BOS
- LHR
2 stops19h 30m
Multiple Airlines
Thu 4/306:40 am
LHR
- BOS
2 stops20h 05m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$574
This LEVEL deal was found by Cheapflights users on 4/16. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:50 pm
BOS
- LHR
1 stop28h 20m
LEVEL
Thu 10/159:55 am
LHR
- BOS
1 stop16h 20m
LEVEL
Deal found 4/16![LEVEL logo]()
$575
This LEVEL deal was found by Cheapflights users on 4/15. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:00 pm
BOS
- LHR
1 stop29h 10m
LEVEL
Wed 9/238:50 pm
LHR
- BOS
1 stop29h 25m
LEVEL
Deal found 4/15![LEVEL logo]()
$579
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:50 pm
BOS
- LHR
1 stop29h 20m
LEVEL
Mon 6/88:50 pm
LHR
- BOS
1 stop29h 15m
LEVEL
Deal found 4/14![LEVEL logo]()
$585
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:00 pm
BOS
- LHR
1 stop16h 05m
LEVEL
Tue 10/209:55 am
LHR
- BOS
1 stop16h 20m
LEVEL
Deal found 4/14![LEVEL logo]()
$586
This deal was found by Cheapflights users on 4/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:45 pm
BOS
- LHR
1 stop12h 05m
Air Canada
Wed 4/2212:40 pm
LHR
- BOS
1 stop10h 05m
Air Canada
Deal found 4/15![Air Canada logo]()
$587
This LEVEL deal was found by Cheapflights users on 4/16. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:00 pm
BOS
- LHR
1 stop16h 05m
LEVEL
Tue 11/39:55 am
LHR
- BOS
1 stop16h 00m
LEVEL
Deal found 4/16![LEVEL logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:05 pm
BOS
- LHR
1 stop11h 15m
TAP AIR PORTUGAL
Sat 5/306:00 am
LHR
- BOS
1 stop19h 20m
TAP AIR PORTUGAL
Deal found 4/13![TAP AIR PORTUGAL logo]()
$601
Best flights from Maine to HeathrowDiscover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 5/612:46 pm
PWM
- LHR
2 stops15h 04m
Delta
Mon 5/119:55 am
LHR
- PWM
2 stops19h 48m
Delta
Deal found 4/16![Delta logo]()
$734
This KLM deal was found by Cheapflights users on 4/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:38 pm
PWM
- LHR
1 stop13h 12m
KLM
Thu 5/143:50 pm
LHR
- PWM
1 stop13h 53m
KLM
Deal found 4/16![KLM logo]()
$736
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:07 pm
BGR
- LHR
1 stop10h 43m
Multiple Airlines
Tue 5/125:35 pm
LHR
- BGR
2 stops27h 12m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$743
This British Airways deal was found by Cheapflights users on 4/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:30 pm
BOS
- LHR
Nonstop6h 35m
British Airways
Mon 10/195:35 pm
LHR
- BOS
Nonstop7h 30m
British Airways
Deal found 4/12![British Airways logo]()
$760
This United Airlines deal was found by Cheapflights users on 4/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:25 pm
BOS
- LHR
1 stop21h 35m
United Airlines
Sat 5/166:50 am
LHR
- BOS
2 stops14h 46m
United Airlines
Deal found 4/14![United Airlines logo]()
$760
This Virgin Atlantic deal was found by Cheapflights users on 4/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
BOS
- LHR
Nonstop6h 35m
Virgin Atlantic
Fri 8/144:05 pm
LHR
- BOS
Nonstop7h 45m
Virgin Atlantic
Deal found 4/14![Virgin Atlantic logo]()
$790
This LEVEL deal was found by Cheapflights users on 4/12. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:00 pm
BOS
- LHR
1 stop29h 10m
LEVEL
Sat 7/118:50 pm
LHR
- BOS
1 stop30h 15m
LEVEL
Deal found 4/12![LEVEL logo]()
$894
This Delta deal was found by Cheapflights users on 4/16. 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.
Thu 5/712:50 pm
PWM
- LHR
2 stops15h 00m
Delta
Thu 5/148:40 am
LHR
- PWM
2 stops21h 03m
Delta
Deal found 4/16![Delta logo]()
$734
This KLM deal was found by Cheapflights users on 4/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/102:38 pm
PWM
- LHR
1 stop13h 12m
KLM
Sat 5/1611:45 am
LHR
- PWM
1 stop17h 58m
KLM
Deal found 4/16![KLM logo]()
$736
This KLM deal was found by Cheapflights users on 4/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:00 pm
BGR
- LHR
1 stop14h 20m
Multiple Airlines
Mon 9/217:45 pm
LHR
- BGR
2 stops23h 38m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$750
This United Airlines deal was found by Cheapflights users on 4/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:27 pm
BOS
- LHR
1 stop30h 28m
United Airlines
Sat 8/152:05 pm
LHR
- BOS
1 stop24h 45m
United Airlines
Deal found 4/12![United Airlines logo]()
$780
This British Airways deal was found by Cheapflights users on 4/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:46 pm
BOS
- LHR
1 stop9h 44m
British Airways
Tue 8/185:35 pm
LHR
- BOS
Nonstop7h 30m
British Airways
Deal found 4/13![British Airways logo]()
$794
This Virgin Atlantic deal was found by Cheapflights users on 4/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:29 pm
BOS
- LHR
1 stop14h 21m
Virgin Atlantic
Wed 6/109:40 am
LHR
- BOS
Nonstop7h 30m
Virgin Atlantic
Deal found 4/16![Virgin Atlantic logo]()
$796
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:07 pm
BGR
- LHR
1 stop10h 43m
Delta
Wed 5/138:20 am
LHR
- BGR
1 stop12h 27m
Delta
Deal found 4/17![Delta logo]()
$737
This KLM deal was found by Cheapflights users on 4/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:27 pm
BGR
- LHR
1 stop11h 23m
Multiple Airlines
Wed 5/207:45 pm
LHR
- BGR
2 stops25h 02m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$750
This KLM deal was found by Cheapflights users on 4/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:38 pm
PWM
- LHR
1 stop14h 42m
KLM
Fri 5/224:05 pm
LHR
- PWM
1 stop13h 38m
KLM
Deal found 4/12![KLM logo]()
$756
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:07 pm
BGR
- LHR
1 stop10h 43m
Delta
Tue 5/128:20 am
LHR
- BGR
1 stop12h 27m
Delta
Deal found 4/17![Delta logo]()
$737
This LEVEL deal was found by Cheapflights users on 4/16. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1110:50 pm
BOS
- LHR
1 stop29h 20m
LEVEL
Tue 7/78:50 pm
LHR
- BOS
1 stop29h 25m
LEVEL
Deal found 4/16![LEVEL logo]()
$907
This Delta deal was found by Cheapflights users on 4/12. 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.
Fri 5/82:38 pm
PWM
- LHR
1 stop16h 27m
Delta
Wed 5/136:30 am
LHR
- PWM
2 stops21h 42m
Delta
Deal found 4/12![Delta logo]()
$749
This KLM deal was found by Cheapflights users on 4/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2811:10 pm
BOS
- LHR
Nonstop6h 30m
KLM
Sun 8/24:20 pm
LHR
- BOS
Nonstop7h 45m
KLM
Deal found 4/12![KLM logo]()
$890
This Delta deal was found by Cheapflights users on 4/12. 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 9/222:35 pm
PWM
- LHR
1 stop10h 45m
Delta
Sun 10/411:30 am
LHR
- PWM
2 stops17h 29m
Delta
Deal found 4/12![Delta logo]()
$752
This Delta deal was found by Cheapflights users on 4/12. 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.
Sat 5/22:51 pm
PWM
- LHR
1 stop12h 59m
Delta
Sat 5/98:40 am
LHR
- PWM
2 stops19h 29m
Delta
Deal found 4/12![Delta logo]()
$753
This Delta deal was found by Cheapflights users on 4/16. 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 9/13:00 pm
BGR
- LHR
1 stop10h 45m
Delta
Tue 9/154:20 pm
LHR
- BGR
1 stop27h 03m
Delta
Deal found 4/16![Delta logo]()
$760
This Delta deal was found by Cheapflights users on 4/14. 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 9/13:00 pm
BGR
- LHR
1 stop10h 45m
Delta
Mon 9/1412:50 pm
LHR
- BGR
1 stop30h 33m
Delta
Deal found 4/14![Delta logo]()
$762
This Delta deal was found by Cheapflights users on 4/16. 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.
Sat 9/263:00 pm
BGR
- LHR
1 stop10h 45m
Delta
Sat 10/1012:25 pm
LHR
- BGR
2 stops30h 10m
Delta
Deal found 4/16![Delta logo]()
$763
This Delta deal was found by Cheapflights users on 4/16. 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.
Mon 7/202:52 pm
BOS
- LHR
1 stop17h 13m
Delta
Wed 8/126:55 pm
LHR
- BOS
Nonstop7h 25m
Delta
Deal found 4/16![Delta logo]()
$796
This Delta deal was found by Cheapflights users on 4/16. 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.
Mon 5/114:00 pm
BOS
- LHR
1 stop11h 50m
Delta
Wed 6/106:55 pm
LHR
- BOS
Nonstop7h 25m
Delta
Deal found 4/16![Delta logo]()
$796
This Delta deal was found by Cheapflights users on 4/16. 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 5/197:00 pm
BOS
- LHR
Nonstop6h 45m
Delta
Thu 6/114:05 pm
LHR
- BOS
Nonstop7h 45m
Delta
Deal found 4/16![Delta logo]()
$895
Last-minute flights from Maine to HeathrowDiscover last-minute flight deals from Maine to Heathrow. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to Heathrow. Data last updated April 17, 2026 and is based on user searches.
This deal was found by Cheapflights users on 4/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:45 pm
BOS
- LHR
1 stop12h 05m
Air Canada
Wed 4/2212:40 pm
LHR
- BOS
1 stop10h 05m
Air Canada
Deal found 4/15![Air Canada logo]()
$587
This Mytrip deal was found by Cheapflights users on 4/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:50 pm
BOS
- LHR
2 stops19h 30m
Multiple Airlines
Thu 4/306:40 am
LHR
- BOS
2 stops20h 05m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$574
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:50 pm
BOS
- LHR
2 stops19h 30m
Multiple Airlines
Tue 5/56:40 am
LHR
- BOS
2 stops17h 10m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$616
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:05 pm
BOS
- LHR
1 stop11h 15m
TAP AIR PORTUGAL
Sat 5/306:00 am
LHR
- BOS
1 stop19h 20m
TAP AIR PORTUGAL
Deal found 4/13![TAP AIR PORTUGAL logo]()
$601
This LEVEL deal was found by Cheapflights users on 4/17. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:50 pm
BOS
- LHR
1 stop29h 20m
LEVEL
Mon 5/188:50 pm
LHR
- BOS
1 stop29h 15m
LEVEL
Deal found 4/17![LEVEL logo]()
$621
This Air Canada deal was found by Cheapflights users on 4/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:50 pm
BOS
- LHR
1 stop10h 10m
Multiple Airlines
Wed 5/68:40 am
LHR
- BOS
2 stops17h 47m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$625
This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 5/62:51 pm
PWM
- LHR
1 stop10h 29m
Delta
Mon 5/119:55 am
LHR
- PWM
2 stops18h 14m
Delta
Deal found 4/16![Delta logo]()
$729
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:50 am
BOS
- LHR
1 stop23h 10m
United Airlines
Wed 5/136:50 am
LHR
- BOS
2 stops14h 34m
United Airlines
Deal found 4/13![United Airlines logo]()
$634
This Mytrip deal was found by Cheapflights users on 4/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:45 am
BOS
- LHR
1 stop20h 05m
Air Canada
Thu 5/146:50 am
LHR
- BOS
2 stops12h 57m
Air Canada
Deal found 4/12![Air Canada logo]()
$632
This Air Canada deal was found by Cheapflights users on 4/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:40 pm
BOS
- LHR
1 stop21h 20m
Air Canada
Wed 5/208:40 am
LHR
- BOS
2 stops17h 47m
Air Canada
Deal found 4/13![Air Canada logo]()
$615
This Cheapflightsfares deal was found by Cheapflights users on 4/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:15 pm
BOS
- LHR
Nonstop6h 50m
British Airways
Wed 5/208:10 pm
LHR
- BOS
Nonstop7h 25m
British Airways
Deal found 4/13![British Airways logo]()
$619
This KLM deal was found by Cheapflights users on 4/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:10 pm
BOS
- LHR
Nonstop6h 30m
KLM
Sat 5/236:30 am
LHR
- BOS
1 stop11h 40m
KLM
Deal found 4/16![KLM logo]()
$622
One-way flights from Maine to HeathrowSearch for one-way flight options from Maine to Heathrow. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Maine to Heathrow. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:50 pm
BOS
- LHR
1 stop18h 30m
Icelandair
Deal found 4/16![Icelandair logo]()
$233
This FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:50 pm
BOS
- LHR
1 stop18h 30m
Icelandair
Deal found 4/16![Icelandair logo]()
$235
This Trip.com deal was found by Cheapflights users on 4/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/128:50 pm
BOS
- LHR
1 stop10h 05m
Icelandair
Deal found 4/17![Icelandair logo]()
$239
This Trip.com deal was found by Cheapflights users on 4/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:50 pm
BOS
- LHR
1 stop10h 05m
Icelandair
Deal found 4/17![Icelandair logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:50 pm
BOS
- LHR
1 stop10h 05m
Icelandair
Deal found 4/17![Icelandair logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:50 pm
BOS
- LHR
1 stop10h 05m
Icelandair
Deal found 4/16![Icelandair logo]()
$246
This FlipMilhas deal was found by Cheapflights users on 4/17. 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 FlipMilhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:52 pm
BOS
- LHR
1 stop12h 33m
GOL
Deal found 4/17![GOL logo]()
$251
This KLM deal was found by Cheapflights users on 4/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:38 pm
PWM
- LHR
1 stop13h 12m
KLM
Deal found 4/15![KLM logo]()
$256
This KLM deal was found by Cheapflights users on 4/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:02 pm
BGR
- LHR
1 stop12h 18m
KLM
Deal found 4/13![KLM logo]()
$259
This Cheapflightsfares deal was found by Cheapflights users on 4/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:17 am
BOS
- LHR
1 stop10h 28m
JetBlue
Deal found 4/13![JetBlue logo]()
$268
This British Airways deal was found by Cheapflights users on 4/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:30 pm
BOS
- LHR
Nonstop6h 40m
British Airways
Deal found 4/13![British Airways logo]()
$269
This Trip.com deal was found by Cheapflights users on 4/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:50 pm
BOS
- LHR
2 stops14h 35m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$271
Find flight deals from Maine to Heathrow
Keep the following information in mind while searching for Maine to Heathrow flight deals. Data was last updated April 17, 2026.
Round-trip from | $551 (LEVEL) |
|---|---|
One-way from | $233 (oojo) |
Popular in | July |
Cheapest in | October |
Average price | $856 |
Cheapflights Fare Finder
Customize your flight search to find flights from Maine 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 April 17, 2026.
Use the filters below to find and compare flights from Maine to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandLondon
PWM - LHR
PWMLHR
Portland
Wed 5/6
12:46 pm-8:50 am
2 stops15h 04m
London Heathrow
Mon 5/11
9:55 am-12:43 am
2 stops19h 48m
$734
PortlandLondon
PWM - LHR
PWMLHR
Portland
Thu 5/7
12:50 pm-8:50 am
2 stops15h 00m
London Heathrow
Thu 5/14
8:40 am-12:43 am
2 stops21h 03m
$734
PortlandLondon
PWM - LHR
PWMLHR
Portland
Thu 5/7
2:38 pm-8:50 am
1 stop13h 12m
London Heathrow
Thu 5/14
3:50 pm-12:43 am
1 stop13h 53m
$736
PortlandLondon
PWM - LHR
PWMLHR
Portland
Sun 5/10
2:38 pm-8:50 am
1 stop13h 12m
London Heathrow
Sat 5/16
11:45 am-12:43 am
1 stop17h 58m
$736
BangorLondon
BGR - LHR
BGRLHR
Bangor
Tue 4/28
5:07 pm-8:50 am
1 stop10h 43m
London Heathrow
Wed 5/13
8:20 am-3:47 pm
1 stop12h 27m
$737
BangorLondon
BGR - LHR
BGRLHR
Bangor
Tue 4/28
5:07 pm-8:50 am
1 stop10h 43m
London Heathrow
Tue 5/12
8:20 am-3:47 pm
1 stop12h 27m
$737
BangorLondon
BGR - LHR
BGRLHR
Bangor
Tue 4/28
5:07 pm-8:50 am
1 stop10h 43m
London Heathrow
Tue 5/12
5:35 pm-3:47 pm
2 stops27h 12m
$743
PortlandLondon
PWM - LHR
PWMLHR
Portland
Fri 5/8
2:38 pm-12:05 pm
1 stop16h 27m
London Heathrow
Wed 5/13
6:30 am-11:12 pm
2 stops21h 42m
$749
BangorLondon
BGR - LHR
BGRLHR
Bangor
Tue 9/8
3:00 pm-10:20 am
1 stop14h 20m
London Heathrow
Mon 9/21
7:45 pm-2:23 pm
2 stops23h 38m
$750
BangorLondon
BGR - LHR
BGRLHR
Bangor
Sun 5/10
4:27 pm-8:50 am
1 stop11h 23m
London Heathrow
Wed 5/20
7:45 pm-3:47 pm
2 stops25h 02m
$750
Showing 1-10 of 57 resultsSorted by cheapest first
Best time to book a flight from Maine to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Maine with our price prediction graph.
PWM-LHR
BOS-LHR
BGR-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.
Cheapflights Insights
Everything you need to know about your flight from Maine to London Heathrow Airport
USME-LHR
PWM-LHR
BOS-LHR
BGR-LHR
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Maine to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
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.
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Complete your trip
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Alternative routes for Maine 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 Maine to Heathrow by cabin class
Find flights from Maine 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 April 17, 2026.
Maine and Heathrow flights
Browse other Maine and Heathrow flight options. Last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Maine to Heathrow flights
Consider these flights traveling from Maine to Heathrow.
Top 2 airlines flying from Maine to Heathrow
Discover the top 2 airlines that operate flights from Maine to Heathrow. 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$648 | Average$798 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$757 | Average$1,118 | FlexibilityNo cancel fee | On-time71% |