RouteRankingIf you are flying from New York JFK to London Heathrow, the most reliable option right now is the BA112 departure at 23:30, arriving on time 100% of the time based on 60 days of data. Choosing the wrong flight on this route can reduce your chances of arriving on time by up to 17% on the outbound and a significant 33% on the return from Heathrow. See the full rankings on the New York JFK to London Heathrow route page.
According to OAG's Busiest Routes Report, JFK to Heathrow is one of the world's busiest transatlantic routes, with five airlines operating; British Airways, Virgin Atlantic, Delta, American Airlines and JetBlue. That level of competition gives travellers genuine choice, and based on over 2,000 flights across the 5 airlines, that choice matters more than most people realise.
The data behind the analysis
We tracked 60 days of historical arrival data across 19 flights on JFK to Heathrow and 20 flights on the return leg.
Airline comparison
At the top level, British Airways leads the outbound at 94.0% and Virgin Atlantic and Delta follow closely at 93.5% and 93.4% respectively. The return direction from Heathrow tells a different story, with every airline performing worse except American Airlines, which improves by 4 points.
| Airline | JFK to LHR | LHR to JFK | Difference |
|---|---|---|---|
| British Airways | 94.0% | 81.3% | -12.7 pts |
| Virgin Atlantic | 93.5% | 82.0% | -11.5 pts |
| Delta | 93.4% | 79.6% | -13.8 pts |
| American Airlines | 88.2% | 92.2% | +4.0 pts |
| JetBlue | 84.1% | 78.7% | -5.4 pts |
American Airlines is the only carrier to perform better departing Heathrow than arriving into it. Every other airline takes a meaningful hit on the return leg, with Delta dropping the furthest at nearly 14 points.
JFK to London Heathrow: flight-level data
The JFK to Heathrow direction is relatively forgiving by transatlantic standards. The worst-performing flight still arrives on time 83% of the time, and the top seven flights all sit at 95% or above.
BA112 at 23:30 is the most consistent single flight on the route, hitting 100% across 51 observations. It is matched by VS138 at 04:40, also at 100%, though with a smaller sample of 33 flights.
If you prefer not to fly overnight, BA178 at 12:50 is the standout daytime option at 96.3% and the only afternoon departure to match the overnight cluster. Every other afternoon or evening flight trails significantly.
| Flight | Departure | On-Time % |
|---|---|---|
| BA112 | 23:30 | 100.0% |
| VS138 | 04:40 | 100.0% |
| BA174 | 23:50 | 97.3% |
| BA178 | 12:50 | 96.3% |
| DL3 | 03:00 | 96.2% |
For the latest rankings, check the New York JFK to London Heathrow route page.
See all JFK to Heathrow flights
| Flight | Departure | On-Time % |
|---|---|---|
| BA112 | 23:30 | 100.0% |
| VS138 | 04:40 | 100.0% |
| BA174 | 23:50 | 97.3% |
| BA178 | 12:50 | 96.3% |
| DL3 | 03:00 | 96.2% |
| BA176 | 00:35 | 96.2% |
| BA172 | 01:55 | 96.2% |
| VS4 | 23:00 | 95.4% |
| BA114 | 02:40 | 92.3% |
| VS26 | 13:15 | 92.0% |
| DL1 | 01:15 | 90.6% |
| AA100 | 23:30 | 88.9% |
| AA142 | 14:50 | 88.2% |
| AA106 | 00:20 | 87.5% |
| BA182 | 03:40 | 86.8% |
| VS10 | 23:30 | 86.8% |
| BA116 | 01:20 | 86.8% |
| B67 | 02:00 | 85.2% |
| B61107 | 13:45 | 83.0% |
Does departure time matter?
On the JFK to Heathrow leg, departure time is one of the clearest predictors of reliability. The difference between the most and least reliable flight is 17%.
In general:
- Overnight departures between 23:00 and 03:00 perform best, averaging well above 90%
- Afternoon departures from 13:00 onwards are less consistent
BA178 at 12:50 is the outlier that breaks this pattern. If a daytime departure is what you need, that is the one to book.
Flights from London Heathrow to JFK
The return leg is where the data becomes genuinely surprising. The spread between best and worst on the Heathrow to JFK leg is 33.2%, nearly double the outbound spread, and the airline rankings flip entirely as shown in the table above.
The best individual flight across both directions is BA177 at 13:20 from Heathrow, arriving on time 97.9% of the time across 48 observations.
The danger zone on the return is clear in the data. Flights departing Heathrow between 10:00 and 12:30 are consistently the worst performers on the route:
- BA175 at 10:15: 72.2%
- BA173 at 11:35: 64.7%
- DL2 at 11:45: 64.8%
If you are flying back to New York and have any flexibility, avoid that window.
| Flight | Departure | On-Time % |
|---|---|---|
| BA177 | 13:20 | 97.9% |
| VS137 | 18:35 | 97.0% |
| AA101 | 10:30 | 96.9% |
| VS3 | 08:55 | 94.6% |
| DL4 | 16:20 | 94.4% |
See all Heathrow to JFK flights
| Flight | Departure | On-Time % |
|---|---|---|
| BA177 | 13:20 | 97.9% |
| VS137 | 18:35 | 97.0% |
| AA101 | 10:30 | 96.9% |
| VS3 | 08:55 | 94.6% |
| DL4 | 16:20 | 94.4% |
| AA105 | 14:10 | 93.8% |
| BA117 | 08:20 | 92.7% |
| BA179 | 17:25 | 90.7% |
| AA141 | 18:05 | 86.0% |
| VS45 | 12:50 | 81.5% |
| B62220 | 08:15 | 80.0% |
| BA115 | 15:20 | 79.6% |
| BA183 | 19:25 | 77.8% |
| B620 | 11:55 | 77.4% |
| BA113 | 16:35 | 75.0% |
| BA175 | 10:15 | 72.2% |
| VS9 | 16:35 | 71.1% |
| VS25 | 20:05 | 66.0% |
| DL2 | 11:45 | 64.8% |
| BA173 | 11:35 | 64.7% |
Full details are available on the London Heathrow to New York JFK route page.
Frequently Asked Questions
How long is the flight from JFK to London Heathrow? The flight from New York JFK to London Heathrow takes approximately 7 hours eastbound. The return leg from Heathrow to JFK takes around 8.5 hours flying westbound against the prevailing headwinds.
Which flight has the best on-time record from JFK to Heathrow? Based on 60 days of data tracked by RouteRanking, BA112 at 23:30 is the most consistent option, arriving on time 100% of the time across 51 observations. VS138 at 04:40 also hits 100% but with a smaller sample.
Which airline is most reliable on JFK to Heathrow? British Airways leads on the outbound at 94.0%, with Virgin Atlantic (93.5%) and Delta (93.4%) close behind. On the return from Heathrow, American Airlines tops the table at 92.2% and is the only airline whose punctuality improves in that direction.
Which airlines fly JFK to London Heathrow? British Airways, Virgin Atlantic, Delta Air Lines, American Airlines and JetBlue all operate scheduled services between JFK and Heathrow.
How often are flights delayed on this route? On the JFK to Heathrow leg, around 10% of flights experience delays on average. The return leg is considerably more variable. On the three worst-performing services departing Heathrow, over a third of flights arrive late into New York.
What time should I avoid flying from Heathrow to JFK? Based on recent data, the 10:00 to 12:30 departure window from Heathrow is the worst-performing slot on the entire route. BA173 (11:35) and DL2 (11:45) both sit below 65% on-time. If you have flexibility, avoid that window.
Is this an overnight flight? The most reliable JFK departures leave between 23:00 and 03:00, arriving into Heathrow in the morning. The return from Heathrow operates throughout the day, with the most reliable services spread across morning and afternoon slots.
What are the return flight options? Heathrow to JFK has 20 tracked departures, with BA177 at 13:20 the most reliable at 97.9%. See the London Heathrow to New York JFK route page for the latest data.