Atlanta (ATL) to London (LHR) is about 4,200 miles and typically takes 8 h 45 min by air. It is an international route, so check passport and entry rules. Airlines with hubs at both ends are the likeliest to offer nonstops; otherwise expect a connection. Call (800) 490-3234 for live fares.
ATL to LHR at a glance
| Route | Atlanta (ATL) to London (LHR) |
|---|---|
| Distance | about 4,200 miles / 6,760 km |
| Typical flight time | 8 h 45 min (estimate) |
| Time difference | 5 hours ahead |
| Route type | International |
| Airlines with hubs here | Delta Air Lines and British Airways |
About the Atlanta to London route
Atlanta to London is an international trip of about 4,200 miles, so planning begins with paperwork as much as with the ticket. Your passport, any entry authorization for the United Kingdom and your connection plan matter as much as the fare.
Flight time and distance
A typical flight takes about 8 h 45 min gate to gate, with a realistic range of 8 h 25 min to 9 h 10 min depending on wind, routing and aircraft. That is an estimate based on the distance of roughly 4,200 miles (6,760 km), not a published schedule.
London is 5 hours ahead of Atlanta on standard time, so the arrival time on your ticket will look different from the flight duration.
Among the 200 routes in our guides, ATL to LHR is longer than about 86% of them.
For comparison, Atlanta to Seattle (ATL to SEA) is about 2,180 miles, so London is a bit farther out from ATL.
The airports
Hartsfield-Jackson Atlanta International Airport (ATL)
Hartsfield-Jackson is Delta's largest hub and has long ranked as the busiest passenger airport in the world. Full ATL guide.
London Heathrow Airport (LHR)
Heathrow is Europe's busiest airport and the home hub of British Airways, with an enormous network of transatlantic flights. Full LHR guide.
Airlines on this route
No single carrier we cover has hubs at both ATL and LHR. Delta Air Lines (at ATL) and British Airways (at LHR) each operate a large network at one end, so many itineraries on this route connect rather than fly nonstop.
Airlines add and drop frequencies throughout the year. Our agents can check what is actually scheduled on your dates.
Best time to fly
For this trip, keep in mind that at LHR, summer and the Christmas holiday are expensive; late autumn and early spring are often cheaper. At ATL, afternoon thunderstorms in summer can ripple through Delta's schedule; build in buffer on tight connections.
Ground transport
Getting to and from ATL
MARTA rail runs from the terminal to downtown and Midtown, and the Plane Train moves passengers between concourses.
Getting to and from LHR
The Elizabeth line, Heathrow Express and Underground all reach central London in 15 to 50 minutes.
Booking tips
Long international tickets are more sensitive to changes than domestic ones, so read the fare rules on baggage and changes before you pay. Start with our international flight checklist.
Frequently asked questions
How long is the flight from Atlanta to London?
A typical ATL to LHR flight takes about 8 h 45 min, with a likely range of 8 h 25 min to 9 h 10 min. Actual time depends on wind, routing, aircraft and whether you connect.
How far is London from Atlanta by air?
The great-circle distance between ATL and LHR is about 4,200 miles (6,760 km).
Which airlines fly from Atlanta to London?
Delta Air Lines and British Airways have a major presence at ATL or LHR, and service varies by season. Ask us to check current nonstop and connecting options.
What is the time difference between Atlanta and London?
London is 5 hours ahead of Atlanta on standard time. Daylight saving time can change the gap for part of the year.
Do I need a passport to fly from Atlanta to London?
Yes, international flights require a valid passport, and the United Kingdom may have additional entry or visa rules. Check the official government site before booking.
When is the best time to book ATL to LHR?
Domestic fares are often competitive one to three months ahead, while international trips benefit from more lead time. Compare several dates, since fares are priced flight by flight.
Explore related routes
More flights involving Atlanta (ATL)
- Atlanta to BostonATL to BOS
- Atlanta to DallasATL to DFW
- Atlanta to DenverATL to DEN
- Atlanta to MiamiATL to MIA
- Atlanta to MinneapolisATL to MSP
- Atlanta to OrlandoATL to MCO
More flights involving London (LHR)
- Boston to LondonBOS to LHR
- Chicago to LondonORD to LHR
- London to SeattleLHR to SEA
- Los Angeles to LondonLAX to LHR
- New York to LondonJFK to LHR
- Newark to LondonEWR to LHR
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.