British Airways Flight 274 Deals & Information (2026/2027)

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British Airways Flight 274 Route Deals From $375

The cheapest prices found with in the last 7 days for return flights were $563 and $375 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Feb 15 - Tue, Mar 3
LAS
Harry Reid Intl.
LHR
Heathrow
$563 Roundtrip, just found
$563
Roundtrip
just found
Select British Airways flight, departing Sun, Feb 15 from Harry Reid Intl. to Heathrow, returning Tue, Mar 3, priced at $563 just found
Tue, Mar 10 - Thu, Mar 19
LAS
Harry Reid Intl.
LHR
Heathrow
$568 Roundtrip, found 3 days ago
$568
Roundtrip
found 3 days ago
Select British Airways flight, departing Tue, Mar 10 from Harry Reid Intl. to Heathrow, returning Thu, Mar 19, priced at $568 found 3 days ago
Tue, Mar 17 - Tue, Mar 24
LAS
Harry Reid Intl.
LHR
Heathrow
$568 Roundtrip, found 1 day ago
$568
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Mar 17 from Harry Reid Intl. to Heathrow, returning Tue, Mar 24, priced at $568 found 1 day ago
Tue, Mar 17 - Tue, Mar 24
LAS
Harry Reid Intl.
LHR
Heathrow
$569 Roundtrip, found 1 day ago
$569
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Mar 17 from Harry Reid Intl. to Heathrow, returning Tue, Mar 24, priced at $569 found 1 day ago
Tue, Oct 20 - Tue, Oct 27
LAS
Harry Reid Intl.
LHR
Heathrow
$580 Roundtrip, found 1 day ago
$580
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Oct 20 from Harry Reid Intl. to Heathrow, returning Tue, Oct 27, priced at $580 found 1 day ago
Wed, Apr 1 - Thu, Apr 30
LAS
Harry Reid Intl.
LHR
Heathrow
$581 Roundtrip, found 14 hours ago
$581
Roundtrip
found 14 hours ago
Select British Airways flight, departing Wed, Apr 1 from Harry Reid Intl. to Heathrow, returning Thu, Apr 30, priced at $581 found 14 hours ago
Tue, Mar 24 - Tue, Apr 21
LAS
Harry Reid Intl.
LHR
Heathrow
$581 Roundtrip, found 5 days ago
$581
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Mar 24 from Harry Reid Intl. to Heathrow, returning Tue, Apr 21, priced at $581 found 5 days ago
Tue, Oct 20 - Tue, Oct 27
LAS
Harry Reid Intl.
LHR
Heathrow
$584 Roundtrip, found 1 day ago
$584
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Oct 20 from Harry Reid Intl. to Heathrow, returning Tue, Oct 27, priced at $584 found 1 day ago
Sat, Feb 14 - Tue, Mar 3
LAS
Harry Reid Intl.
LHR
Heathrow
$589 Roundtrip, found 2 days ago
$589
Roundtrip
found 2 days ago
Select British Airways flight, departing Sat, Feb 14 from Harry Reid Intl. to Heathrow, returning Tue, Mar 3, priced at $589 found 2 days ago
Sun, Feb 8 - Tue, Feb 17
LAS
Harry Reid Intl.
LHR
Heathrow
$591 Roundtrip, just found
$591
Roundtrip
just found
Select British Airways flight, departing Sun, Feb 8 from Harry Reid Intl. to Heathrow, returning Tue, Feb 17, priced at $591 just found
Sun, Feb 1 - Tue, Feb 10
LAS
Harry Reid Intl.
LHR
Heathrow
$592 Roundtrip, found 2 days ago
$592
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Feb 1 from Harry Reid Intl. to Heathrow, returning Tue, Feb 10, priced at $592 found 2 days ago
Sun, Feb 15 - Tue, Mar 3
LAS
Harry Reid Intl.
LHR
Heathrow
$593 Roundtrip, just found
$593
Roundtrip
just found
Select British Airways flight, departing Sun, Feb 15 from Harry Reid Intl. to Heathrow, returning Tue, Mar 3, priced at $593 just found
Tue, Feb 24 - Wed, Mar 4
LAS
Harry Reid Intl.
LHR
Heathrow
$599 Roundtrip, found 2 days ago
$599
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Feb 24 from Harry Reid Intl. to Heathrow, returning Wed, Mar 4, priced at $599 found 2 days ago
Tue, Feb 3 - Tue, Feb 10
LAS
Harry Reid Intl.
LHR
Heathrow
$599 Roundtrip, found 1 day ago
$599
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Feb 3 from Harry Reid Intl. to Heathrow, returning Tue, Feb 10, priced at $599 found 1 day ago

Frequently asked questions

What route does flight number BA274 take?
BA274 jets between McCarran Intl. Airport (LAS) and LHR and is a direct flight. This service generally takes 10 hours and 15 minutes.
How often is BA274 on time?
People flying on British Airways flight number BA274 should be aware that 70% of these flights take off on schedule. If you encounter a delay, the typical wait time is approximately 36 minutes. This service has a 0.45-star rating.
What terminal does BA274 fly out of?
Flights between Las Vegas, NV Airport (LAS-McCarran Intl.) and London Airport (LHR-Heathrow) are served by BA274, and passengers who travel on this route usually take off from Terminal 3.
What kind of plane is on flight number BA274?
You're likely to find yourself traveling aboard a Boeing 777 if you're on flight number BA274. This flight almost always leaves from McCarran Intl. Airport (LAS) and touches down at London Airport (LHR-Heathrow).
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your BA274 flight with Travelocity, please visit our Customer Service Portal.