Atlanta (ATL) – Seattle (SEA)
- Distance
- 3,511 km
- 2,182 mi · 1,896 nm
- Flight time
- 5 h 25 min / 4 h 39 min
- Average gate to gate: ATL → SEA / back
- Time difference
- 3 h
- CO2 per passenger
- 441 kg
- One way, economy, incl. RF (261 kg CO2 only)
- Passengers / year
- 1,090,727
- Aug 2025 – Jul 2026 · −3.0%
- Flights / week
- 126
- Both directions, average
- Seats filled
- 88%
- 1,239,511 seats a year
- Airlines nonstop
- 2
- DL, AS
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from ATL
- 307°
- Heading from SEA
- 102°
- Halfway point
- 42.12, -101.34
- Great-circle km
- 3,505 km (sphere, for EU261)
- In the air ATL → SEA
- 4 h 54 min
- In the air SEA → ATL
- 4 h 8 min
- Clocks
- Seattle is 3 h behind Atlanta
The estimate for a route without real times is 4 h 55 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 112,892 |
| Sep 2025 | 98,019 |
| Oct 2025 | 91,687 |
| Nov 2025 | 77,687 |
| Dec 2025 | 87,024 |
| Jan 2026 | 67,958 |
| Feb 2026 | 63,032 |
| Mar 2026 | 73,121 |
| Apr 2026 | 79,755 |
| May 2026 | 101,464 |
| Jun 2026 | 115,361 |
| Jul 2026 | 122,727 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 627 |
| Sep 2025 | 567 |
| Oct 2025 | 582 |
| Nov 2025 | 510 |
| Dec 2025 | 531 |
| Jan 2026 | 430 |
| Feb 2026 | 387 |
| Mar 2026 | 453 |
| Apr 2026 | 507 |
| May 2026 | 599 |
| Jun 2026 | 652 |
| Jul 2026 | 689 |
Airlines flying ATL–SEA nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| DLDelta Air Lines | 91 | 76% |
| ASAlaska Airlines | 34 | 24% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Boeing 737-900ER · 3,212 flights
- Boeing 757-300 · 936 flights
- Boeing B737 Max 900 · 726 flights
- Boeing 757-200 · 722 flights
- Airbus Industrie A321-200n · 507 flights
- Boeing 737-800 · 241 flights
- Boeing 767-300/300ER · 90 flights
- Boeing B737 Max 800 · 31 flights
Also carried: 2,509 tonnes of freight and 153 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 80.1%
- Arrived within 15 min of schedule
- Average delay
- 14 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.6%
- Flights counted
- 6,555
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| DLDelta Air Lines | 80.8% | 14 min |
| ASAlaska Airlines | 78.5% | 12 min |
Delay minutes by cause: airline 55% · aircraft arriving late 21% · air traffic system 21% · weather 4% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $353
- One way, all cabins
- Average over a year
- $338
- Q3 2025 – Q1 2026
- Largest airline
- Delta Air Lines
- 56% of passengers · $402
- Lowest-fare airline
- Alaska Airlines
- 37% of passengers · $297
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q3 2025 $334 · Q4 2025 $332 · Q1 2026 $353).
U.S. DOT Consumer Airfare Report, Table 1a (airline ticket sample, US domestic airport pairs). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 3,505 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Atlanta and Seattle
Kilometres. Linked numbers have a page of their own. All Atlanta airports · All Seattle airports
More routes from ATL
More routes from SEA
| Route | Distance | Passengers / year |
|---|---|---|
| SEA → DEN | 1,648 km | 1,819,437 |
| SEA → PHX | 1,781 km | 1,813,338 |
| SEA → LAX | 1,535 km | 1,810,795 |
| SEA → ANC | 2,331 km | 1,694,688 |
| SEA → SFO | 1,092 km | 1,628,228 |
| SEA → ORD | 2,769 km | 1,622,991 |
| SEA → LAS | 1,394 km | 1,596,435 |
| SEA → DFW | 2,671 km | 1,577,921 |
| SEA → SAN | 1,690 km | 1,233,726 |
| SEA → SLC | 1,108 km | 1,106,553 |