American Airlines Flight AA20 Deals & Information (2025/2026)

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American Airlines Flight 20 Route Deals From $449

The cheapest prices found with in the last 7 days for return flights were $484 and $449 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 26 - Fri, Dec 5
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$484 Roundtrip, just found
$484
Roundtrip
just found
Select American Airlines flight, departing Wed, Nov 26 from Dallas-Fort Worth Intl. to Heathrow, returning Fri, Dec 5, priced at $484 just found
Sun, Oct 5 - Thu, Oct 16
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$485 Roundtrip, just found
$485
Roundtrip
just found
Select American Airlines flight, departing Sun, Oct 5 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, Oct 16, priced at $485 just found
Wed, Nov 26 - Fri, Dec 5
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$488 Roundtrip, just found
$488
Roundtrip
just found
Select American Airlines flight, departing Wed, Nov 26 from Dallas-Fort Worth Intl. to Heathrow, returning Fri, Dec 5, priced at $488 just found
Sun, Oct 5 - Thu, Oct 16
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$490 Roundtrip, just found
$490
Roundtrip
just found
Select American Airlines flight, departing Sun, Oct 5 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, Oct 16, priced at $490 just found
Sun, Oct 5 - Thu, Oct 16
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$491 Roundtrip, just found
$491
Roundtrip
just found
Select American Airlines flight, departing Sun, Oct 5 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, Oct 16, priced at $491 just found
Tue, Jan 13 - Tue, Feb 3
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$492 Roundtrip, just found
$492
Roundtrip
just found
Select American Airlines flight, departing Tue, Jan 13 from Dallas-Fort Worth Intl. to Heathrow, returning Tue, Feb 3, priced at $492 just found
Tue, Dec 30 - Fri, Jan 9
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$497 Roundtrip, found 10 hours ago
$497
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Dec 30 from Dallas-Fort Worth Intl. to Heathrow, returning Fri, Jan 9, priced at $497 found 10 hours ago
Tue, Dec 30 - Fri, Jan 9
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$499 Roundtrip, found 10 hours ago
$499
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Dec 30 from Dallas-Fort Worth Intl. to Heathrow, returning Fri, Jan 9, priced at $499 found 10 hours ago
Mon, Feb 2 - Mon, Feb 16
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$501 Roundtrip, found 1 day ago
$501
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Feb 2 from Dallas-Fort Worth Intl. to Heathrow, returning Mon, Feb 16, priced at $501 found 1 day ago
Tue, Apr 21 - Thu, May 7
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$514 Roundtrip, found 4 days ago
$514
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Apr 21 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, May 7, priced at $514 found 4 days ago