Washington (BWI) – Houston (IAH)
- Distance
- 1,988 km
- 1,235 mi · 1,073 nm
- Flight time
- 3 h 20 min / 3 h 2 min
- Average gate to gate: BWI → IAH / back
- Time difference
- 1 h
- CO2 per passenger
- 250 kg
- One way, economy, incl. RF (148 kg CO2 only)
- Passengers / year
- 384,594
- Aug 2025 – Jul 2026 · +4.4%
- Flights / week
- 52
- Both directions, average
- Seats filled
- 81%
- 474,176 seats a year
- Airlines nonstop
- 4
- UA, NK, F9
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 BWI
- 245°
- Heading from IAH
- 54°
- Halfway point
- 34.94, -86.52
- Great-circle km
- 1,986 km (sphere, for EU261)
- In the air BWI → IAH
- 2 h 54 min
- In the air IAH → BWI
- 2 h 35 min
- Clocks
- Houston is 1 h behind Washington
The estimate for a route without real times is 3 h 10 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 32,892 |
| Sep 2025 | 30,838 |
| Oct 2025 | 34,485 |
| Nov 2025 | 33,849 |
| Dec 2025 | 31,575 |
| Jan 2026 | 29,151 |
| Feb 2026 | 26,284 |
| Mar 2026 | 32,195 |
| Apr 2026 | 33,699 |
| May 2026 | 34,107 |
| Jun 2026 | 32,264 |
| Jul 2026 | 33,255 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 232 |
| Sep 2025 | 245 |
| Oct 2025 | 258 |
| Nov 2025 | 265 |
| Dec 2025 | 210 |
| Jan 2026 | 222 |
| Feb 2026 | 200 |
| Mar 2026 | 220 |
| Apr 2026 | 238 |
| May 2026 | 224 |
| Jun 2026 | 200 |
| Jul 2026 | 207 |
Airlines flying BWI–IAH nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| UAUnited Air Lines | 32 | 56% |
| NKSpirit Air Lines | 13 | 28% |
| F9Frontier Airlines | 5.4 | 13% |
| YVMesa Airlines | 2.8 | 3% |
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 · 339 flights
- Boeing 737-900 · 333 flights
- Boeing 737-800 · 318 flights
- Airbus Industrie A320-100/200 · 302 flights
- Boeing B737 Max 900 · 282 flights
- Boeing 737-900ER · 247 flights
- Boeing 737-700/700LR/Max 7 · 186 flights
- Airbus Industrie A320-200n · 166 flights
Also carried: 26 tonnes of freight and 57 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 77.8%
- Arrived within 15 min of schedule
- Average delay
- 17 min
- Late arrivals count, early ones as 0
- Cancelled
- 1.7%
- Flights counted
- 2,621
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| UAUnited Air Lines | 81.8% | 13 min |
| NKSpirit Air Lines | 76.9% | 19 min |
| F9Frontier Airlines | 56.8% | 37 min |
Delay minutes by cause: airline 35% · aircraft arriving late 31% · air traffic system 29% · weather 5% · 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
- $190
- One way, all cabins
- Average over a year
- $183
- Q2 2025 – Q1 2026
- Largest airline
- United Air Lines
- 46% of passengers · $257
- Lowest-fare airline
- Spirit Air Lines
- 39% of passengers · $117
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $190 · Q3 2025 $177 · Q4 2025 $176 · Q1 2026 $190).
Fare outlook, Q1 2027: about $194, likely $168–$221
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 90% of the time over 21 quarters (median error 6.3%). 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 4% 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: 1,986 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 Houston
Kilometres. Linked numbers have a page of their own. All Washington airports · All Houston airports
More routes from BWI
More routes from IAH
| Route | Distance | Passengers / year |
|---|---|---|
| IAH → ORD | 1,489 km | 1,711,056 |
| IAH → DEN | 1,387 km | 1,641,444 |
| IAH → LAX | 2,219 km | 1,544,652 |
| IAH → ATL | 1,109 km | 1,430,755 |
| IAH → DFW | 361 km | 1,257,452 |
| IAH → SFO | 2,632 km | 1,223,236 |
| IAH → MCO | 1,375 km | 1,147,728 |
| IAH → EWR | 2,252 km | 1,135,261 |
| IAH → LGA | 2,279 km | 1,049,227 |
| IAH → LAS | 1,966 km | 1,028,809 |