Miami (MIA) – Seattle (SEA)
- Distance
- 4,384 km
- 2,724 mi · 2,367 nm
- Flight time
- 6 h 40 min / 5 h 46 min
- Average gate to gate: MIA → SEA / back
- Time difference
- 3 h
- CO2 per passenger
- 513 kg
- One way, economy, incl. RF (303 kg CO2 only)
- Passengers / year
- 377,280
- Aug 2025 – Jul 2026 · +17.1%
- Flights / week
- 46
- Both directions, average
- Seats filled
- 84%
- 447,698 seats a year
- Airlines nonstop
- 3
- AA, AS, DL
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 MIA
- 314°
- Heading from SEA
- 108°
- Halfway point
- 38.50, -98.19
- Great-circle km
- 4,379 km (sphere, for EU261)
- In the air MIA → SEA
- 6 h
- In the air SEA → MIA
- 5 h 12 min
- Clocks
- Seattle is 3 h behind Miami
The estimate for a route without real times is 6 h; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 30,748 |
| Sep 2025 | 25,211 |
| Oct 2025 | 23,770 |
| Nov 2025 | 28,406 |
| Dec 2025 | 38,458 |
| Jan 2026 | 32,365 |
| Feb 2026 | 26,984 |
| Mar 2026 | 30,378 |
| Apr 2026 | 29,622 |
| May 2026 | 33,052 |
| Jun 2026 | 37,533 |
| Jul 2026 | 40,753 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 185 |
| Sep 2025 | 180 |
| Oct 2025 | 184 |
| Nov 2025 | 190 |
| Dec 2025 | 237 |
| Jan 2026 | 199 |
| Feb 2026 | 167 |
| Mar 2026 | 179 |
| Apr 2026 | 179 |
| May 2026 | 207 |
| Jun 2026 | 239 |
| Jul 2026 | 245 |
Airlines flying MIA–SEA nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| AAAmerican Airlines | 17 | 40% |
| ASAlaska Airlines | 15 | 31% |
| DLDelta Air Lines | 14 | 29% |
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
- Airbus Industrie A321-200n · 1,419 flights
- Boeing B737 Max 900 · 494 flights
- Boeing 737-900ER · 198 flights
- Boeing B737 Max 800 · 186 flights
- Boeing 737-800 · 52 flights
- Airbus Industrie A321Neoxlr · 42 flights
Also carried: 584 tonnes of freight and 4 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 72.5%
- Arrived within 15 min of schedule
- Average delay
- 18 min
- Late arrivals count, early ones as 0
- Cancelled
- 1%
- Flights counted
- 2,422
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| AAAmerican Airlines | 73% | 17 min |
| ASAlaska Airlines | 73.9% | 13 min |
| DLDelta Air Lines | 70.5% | 25 min |
Delay minutes by cause: airline 45% · aircraft arriving late 28% · air traffic system 23% · weather 3% · security 1%.
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
- $334
- One way, all cabins
- Average over a year
- $306
- Q2 2025 – Q1 2026
- Largest airline
- Delta Air Lines
- 40% of passengers · $326
- Lowest-fare airline
- Delta Air Lines
- 40% of passengers · $326
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $299 · Q3 2025 $278 · Q4 2025 $314 · Q1 2026 $334).
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: 4,379 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 Miami and Seattle
Kilometres. Linked numbers have a page of their own. All Miami airports · All Seattle airports
More routes from MIA
| Route | Distance | Passengers / year |
|---|---|---|
| MIA → ATL | 957 km | 1,901,419 |
| MIA → LGA | 1,764 km | 1,803,803 |
| MIA → DFW | 1,804 km | 1,512,657 |
| MIA → JFK | 1,753 km | 1,326,964 |
| MIA → ORD | 1,926 km | 1,321,385 |
| MIA → EWR | 1,746 km | 1,160,582 |
| MIA → CLT | 1,046 km | 1,102,847 |
| MIA → LAX | 3,769 km | 1,061,103 |
| MIA → LHR | 7,121 km | 1,048,211 |
| MIA → DCA | 1,480 km | 1,044,799 |
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 |