Boston to Newark Flight Delays
Sample size: 12,005 BOS–EWR flights, January 2023 to December 2025 (BTS). 23.2% of Boston to Newark flights arrived at least 15 minutes late. That tracks the 24.2% median for the major US domestic routes DelayGuard covers almost exactly. Departure time moves the odds more than anything else on this route: 06:00 departures run 8.68% late against 41.52% for 19:00. Tuesday is the calmest day at 18.46%, Thursday the worst at 28.44%. Cancellations (2024 to 2025) peak in July at 8.42% of scheduled flights and bottom out in March at 1.02%. Last updated: 2026-10-01.
These figures are historical US domestic rates, not a forecast for one departure. Use the delay risk check for your flight before you book.
BOS airport delay guide · EWR airport delay guide · Predict a BOS to EWR flight
Best time to fly BOS to EWR
The best time to fly BOS to EWR is the 6 AM departure and fly on a Tuesday, not a Thursday (18.46% against 28.44%): 8.68% of 6 AM flights arrived 15+ minutes late, against 41.52% at 7 PM.
Lowest observed delay rates depart 06:00–07:00, 09:00. The highest sit at 17:00–19:00. Only departure hours with at least 100 recorded flights are listed, so sparse hours are blank rather than estimated.
| Departure hour | Delayed 15+ min | Flights observed |
|---|---|---|
| 06:00 | 8.68% | 1,946 |
| 07:00 | 8.7% | 874 |
| 08:00 | 10.96% | 794 |
| 09:00 | 9.18% | 686 |
| 10:00 | 13.52% | 858 |
| 11:00 | 18.68% | 423 |
| 12:00 | 33.42% | 796 |
| 13:00 | 33.8% | 707 |
| 14:00 | 26.22% | 328 |
| 15:00 | 33.74% | 661 |
| 16:00 | 31.79% | 711 |
| 17:00 | 37.14% | 1,015 |
| 18:00 | 36% | 814 |
| 19:00 | 41.52% | 660 |
| 20:00 | 30.84% | 467 |
| 21:00 | 30.73% | 205 |
BOS to EWR flight time and distance
Scheduled gate-to-gate time from BOS to EWR is a median 1 h 29 min. Flights actually took a median 1 h 22 min gate to gate, including 51 min in the air. 3.9% ran 30 or more minutes over schedule and 69.8% arrived sooner than scheduled (BTS data, January 2023 to December 2025).
BOS to EWR is 200 miles (BTS data).
| Airline | Scheduled (median) | Actual (median) | In the air (median) | 30+ min over schedule | Flights |
|---|---|---|---|---|---|
| United Airlines | 1 h 28 min | 1 h 20 min | 51 min | 3.0% | 8,186 |
| Republic Airways | 1 h 32 min | 1 h 29 min | 53 min | 6.7% | 2,947 |
| Spirit Airlines (ceased operating May 2026) | 1 h 32 min | 1 h 15 min | 50 min | 3.6% | 361 |
| JetBlue Airways | 1 h 35 min | 1 h 20 min | 51 min | 0.9% | 351 |
How late, and why
When a BOS to EWR flight was late (15+ minutes), it arrived an average of 78 minutes late (median 50). 9.9% of all completed flights arrived an hour or more late (BTS data, 2023 to 2025).
Of the delay minutes on late BOS to EWR flights, 46.2% were caused by the air-traffic system (volume, non-extreme weather, airport operations), 32.1% by a late incoming aircraft, 17.4% by the airline (crew, maintenance, ground handling), 4.2% by extreme weather and 0.1% by security (BTS data, 2023 to 2025).
| Cause | Share of delay minutes |
|---|---|
| air-traffic system | 46.2% |
| late incoming aircraft | 32.1% |
| airline | 17.4% |
| extreme weather | 4.2% |
| security | 0.1% |
BTS assigns causes to delay minutes on flights that arrived 15+ minutes late. "Air-traffic system" includes non-extreme weather that slows traffic.
BOS to EWR delays by day of week
| Day | Delayed 15+ min | Flights observed |
|---|---|---|
| Mon | 23.19% | 1,807 |
| Tue | 18.46% | 1,804 |
| Wed | 20.73% | 1,819 |
| Thu | 28.44% | 1,790 |
| Fri | 26.88% | 1,797 |
| Sat | 18.69% | 1,418 |
| Sun | 25.41% | 1,570 |
Month-by-month cancellation pattern
Share of scheduled BOS–EWR flights cancelled in each month, from BTS 2024–2025 on-time reporting. These are cancellations, not delays. Delay figures on this page cover January 2023 to December 2025.
| Month | Cancelled | Flights scheduled |
|---|---|---|
| Jan | 3.02% | 596 |
| Feb | 2.68% | 596 |
| Mar | 1.02% | 684 |
| Apr | 2.3% | 652 |
| May | 5.11% | 666 |
| Jun | 3.98% | 678 |
| Jul | 8.42% | 736 |
| Aug | 6.46% | 728 |
| Sep | 1.63% | 738 |
| Oct | 1.68% | 773 |
| Nov | 5.11% | 666 |
| Dec | 1.91% | 577 |
Airlines on BOS to EWR: delays and cancellations
United Airlines and Republic Airways fly this route today. Spirit Airlines also appear in the history below but has ceased operations. Only carriers with at least 200 scheduled flights on the pairing are listed. Delay rates cover January 2023 to December 2025; cancellation rates cover 2024 to 2025.
| Airline | Share of flights | Delayed 15+ min | Cancelled | Flights scheduled |
|---|---|---|---|---|
| United Airlines | 67% | 23.03% | 2.9% | 5,411 |
| Republic Airways | 28% | 24.6% | 4.97% | 2,292 |
| Spirit Airlines (ceased operations 2 May 2026) | 5% | 17.17% | 6.46% | 387 |
Related pages
- BOS delays: rate, worst hours and live risk
- EWR delays: rate, worst hours and live risk
- Boston to DC flights (BOS to DCA)
- DC to Boston flights (DCA to BOS)
- US airline cancellation rates
- Thanksgiving and Christmas 2026 flight delay guide
- Predict a BOS to EWR flight
Check your odds: Will my flight be delayed? · Will my flight be cancelled?
BOS vs EWR: airport conditions
Both ends of a route shape its delay profile. These are DelayGuard's operational scores for Boston and Newark.
| Measure | BOS (Boston) | EWR (Newark) |
|---|---|---|
| Congestion | high | high |
| Weather risk | moderate | high |
| NAS vulnerability | high | high |
| Average taxi-out | 16 min | 25 min |
| Runways | 6 | 3 |
BOS to EWR questions
- How long is the flight from Boston to Newark?
- Scheduled gate-to-gate time from BOS to EWR is a median 1 h 29 min, and flights actually took a median 1 h 22 min including 51 min in the air. 3.9% ran 30+ minutes over schedule (BTS data, January 2023 to December 2025).
- How often do BOS to EWR flights get delayed?
- Across 12,005 recorded BOS–EWR departures, January 2023 to December 2025 (BTS), 23.2% arrived at least 15 minutes late. Departure time matters most: 6:00 departures run 8.68% late against 41.52% for 19:00. Actual delay frequency varies by airline, time of day, and season.
- What is the best time of year to fly BOS to EWR?
- Both Boston and Newark share the same primary risk window: December–February (winter weather) and June–August (summer storms). Plan around those periods for the lowest delay probability on this route.
- Which airline is most reliable on BOS to EWR?
- On BOS→EWR, United Airlines has the lowest measured delay rate at 23.03% of 8,186 flights, and Republic Airways the highest at 24.6% (BTS, January 2023 to December 2025). United Airlines cancels the fewest at 2.9% (2024 to 2025). These are route-specific figures, not airline-wide averages.
- How late are BOS to EWR flights when they are delayed?
- When a BOS to EWR flight was late (15+ minutes), it arrived an average of 78 minutes late (median 50). 9.9% of all completed flights arrived an hour or more late (BTS data, 2023 to 2025).
- How accurate is DelayGuard's delay prediction for this route?
- DelayGuard's delay risk score comes from an ML model trained on BTS data (3.95 million US domestic flights, 2023 to mid-2025), with live weather data (within 5 days of departure) and FAA NAS advisories (within 6 hours) — a likelihood of delay, not a guarantee.
Delay figures reflect arrivals 15 or more minutes late in BTS on-time reporting. Cancellation figures are separate and count flights that never operated. Hours, days and months with fewer than 100 recorded flights are omitted rather than estimated.