Washington (IAD) – Phoenix (PHX)
- Distance
- 3,148 km
- 1,956 mi · 1,700 nm
- Flight time
- 4 h 54 min / 4 h 9 min
- Average gate to gate: IAD → PHX / back
- Time difference
- 2 h / 3 h
- January / July
- CO2 per passenger
- 395 kg
- One way, economy, incl. RF (234 kg CO2 only)
- Passengers / year
- 296,183
- Aug 2025 – Jul 2026 · −15.3%
- Flights / week
- 40
- Both directions, average
- Seats filled
- 82%
- 359,253 seats a year
- Airlines nonstop
- 2
- UA, WN
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 IAD
- 270°
- Heading from PHX
- 69°
- Halfway point
- 37.46, -95.36
- Great-circle km
- 3,141 km (sphere, for EU261)
- In the air IAD → PHX
- 4 h 27 min
- In the air PHX → IAD
- 3 h 45 min
- Clocks
- 2 h in January, 3 h in July
The estimate for a route without real times is 4 h 30 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 24,062 |
| Sep 2025 | 24,995 |
| Oct 2025 | 29,316 |
| Nov 2025 | 30,499 |
| Dec 2025 | 30,813 |
| Jan 2026 | 23,701 |
| Feb 2026 | 21,311 |
| Mar 2026 | 34,250 |
| Apr 2026 | 26,645 |
| May 2026 | 29,327 |
| Jun 2026 | 11,206 |
| Jul 2026 | 10,058 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 176 |
| Sep 2025 | 175 |
| Oct 2025 | 196 |
| Nov 2025 | 216 |
| Dec 2025 | 217 |
| Jan 2026 | 190 |
| Feb 2026 | 162 |
| Mar 2026 | 231 |
| Apr 2026 | 182 |
| May 2026 | 190 |
| Jun 2026 | 67 |
| Jul 2026 | 60 |
Airlines flying IAD–PHX nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| UAUnited Air Lines | 28 | 73% |
| WNSouthwest Airlines | 12 | 27% |
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 B737 Max 900 · 561 flights
- Boeing 737-800 · 545 flights
- Boeing 737-900ER · 479 flights
- Boeing B737 Max 800 · 412 flights
- Boeing 737-700/700LR/Max 7 · 63 flights
- Airbus Industrie A321Neoxlr · 1 flight
- Airbus Industrie A321-200n · 1 flight
Also carried: 79 tonnes of freight and 6 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 83.7%
- Arrived within 15 min of schedule
- Average delay
- 10 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.7%
- Flights counted
- 2,073
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| UAUnited Air Lines | 88.4% | 9 min |
| WNSouthwest Airlines | 72.6% | 13 min |
Delay minutes by cause: airline 33% · aircraft arriving late 34% · air traffic system 29% · weather 2% · security 2%.
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
- $364
- One way, all cabins
- Average over a year
- $316
- Q2 2025 – Q1 2026
- Largest airline
- United Air Lines
- 73% of passengers · $387
- Lowest-fare airline
- Southwest Airlines
- 21% of passengers · $295
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $300 · Q3 2025 $266 · Q4 2025 $325 · Q1 2026 $364).
Fare outlook, Q1 2027: about $372, likely $321–$424
The average fare paid we expect a year after Q1 2026, the newest DOT quarter. On this route, past forecasts made this way fell inside the range 76% of the time over 21 quarters (median error 4.2%). An estimate from US DOT data: not a price you can book, not a guarantee, not advice on when to buy. How the outlook works
Cheapest quarter on this route: Q3, typically 6% below the year's average (9 years of DOT data, without 2020–21).
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: 3,141 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 Washington and Phoenix
Kilometres. Linked numbers have a page of their own. All Washington airports