$384 Cheap Delta flights San Francisco (SFO) to London (LHR)

View $384 flight on Wed, Aug 6, 2025Opens in a new window

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$384 Cheap Delta flights San Francisco (SFO) to London (LHR)

Prices were available within the past 7 days and start at $384 for one-way flights and $629 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Mar 3 - Tue, Mar 17
SFO
San Francisco
LHR
London
$629 Roundtrip, just found
$629
Roundtrip
just found
Select Delta flight, departing Tue, Mar 3 from San Francisco to London, returning Tue, Mar 17, priced at $629 just found
Flights from San Francisco (SFO) to London (LHR)
Origin airport
San Francisco Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
Lufthansa
Distance
5354 mi
Average flight time
18 hours 22 mins

Frequently asked questions

How much is a Delta Air Lines flight from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)?
Set the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines return flights from $629 from SFO to LHR. Affordable one-way tickets from $384 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SFO to LHR with Delta Air Lines?
Look for one-way or return flights to London in January or February. You could find an affordable fare with Delta Air Lines during these off-peak travel months.
What is the cheapest time to book flights from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR) with Delta Air Lines?
Start your search for Delta Air Lines flights from SFO to LHR about one month before you want to go. The most affordable time to reserve an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your ticket type or itinerary, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Passengers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)?
To see if there's a direct route from SFO to LHR with Delta Air Lines or any other airlines, check the "Nonstop" filter when browsing for flights.
What is the earliest Delta Air Lines flight from SFO to LHR?
To find the earliest departures from SFO to LHR with Delta Air Lines, filter your search by "Morning" and "Early Morning." Booking an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in London?
Heathrow Airport (LHR) is the primary London hub for Delta Air Lines flights from San Francisco Intl. Airport (SFO).
Why fly with Delta Air Lines from SFO to LHR?
Delta Air Lines makes flying from SFO to LHR more comfortable with a rewarding loyalty program and an excellent in-flight experience. You even have the chance to collect points with Delta SkyMiles. Remember to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)?
You can usually reschedule or cancel your flight, although there may be additional charges if you booked more than 24 hours ago. Need to keep your options open? Apply the "No cancel fee" or "Changes included" filter to find flights that won't penalize you if you have to alter your plans. To make modifications, visit "Trips," select your flight and click on "Manage Booking" for more details.
*Available to One Key members.