The sector is held by American Airlines, Mesa Airlines and United Airlines.
Airport pair · hand carry reference
DCA Washington DC to IAH Houston
Reagan National, the United States, to George Bush Intercontinental, the United States. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 10.3 times a day
- Great circle
- 1,942 km
- Block, estimated
- 2h 59m
- Door to door
- 9h 44m
What DCA to IAH looks like
The DCA to IAH sector, the carriers on it and the flying time, before anything is promised to anybody.
Washington DC DCA to Houston IAH is a medium haul sector of 1,942 km by great circle, flown nonstop 10.3 times a day.
At the cruise speed this site models for 1,942 km, 830 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 2h 59m.
Washington DC DCA is a large airport in the network held here, 112 scheduled destinations and 464.3 departures a day. Houston IAH has 197 destinations and 641 departures a day.
Houston is one hour behind of Washington DC all year.
The pair sits inside the Americas, a corridor where the site already publishes 13 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on DCA to IAH from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| DCA to IAH | 10.29 | 72 | American Airlines, Mesa Airlines, United Airlines |
| IAH to DCA | 2.57 | 18 | American Airlines |
3 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
The two directions are not level: DCA to IAH runs 10.3 times a day, the return runs about twice a day, and a round trip has to be planned around the thinner of the two.
At 10.3 times a day there is usually another departure within a few hours, which is what makes a same day booking on this pair realistic.
Between them the two directions put about 90 departures a week on DCA to IAH, which is the number that decides whether a seat can be found today or on Thursday.
The clock from collection to signature
The same ground timings the route calculator starts from, applied to the 2h 59m block time on DCA to IAH. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to DCA | 90 min | 1h 30m |
| At DCA before departure | 180 min | 4h 30m |
| DCA to IAH in the air, estimated | 179 min | 7h 29m |
| Formalities at IAH | 90 min | 8h 59m |
| Delivery run in Houston | 45 min | 9h 44m |
| Door to door | 584 min | 9h 44m |
On the desk standard ground timings, ninety minutes to collect and reach the airport, three hours at the airport before departure, ninety minutes of arrival formalities and a forty five minute delivery run, the door to door figure for DCA to IAH is 9h 44m.
A courier who leaves Washington DC at 09:00 local is on the ground in Houston at about 10:59 local and at the door by 13:14 the same day.
Working backwards from a six in the evening handover in Houston, the last useful departure from Washington DC is around 13:46 local.
When the nonstop does not work
Every airport that joins the two ends, ranked by when they land, among the ones whose weaker leg is dependable enough to plan on. Connection time is allowed for the size of the hub. 46 of them join DCA to IAH.
| Connecting at | DCA to hub, flights a day | Hub to IAH, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Birmingham BHM | 3.14 | 5.14 | 1,955 | 4h 30m |
| Greenville GSP | 2.29 | 1.86 | 1,983 | 4h 39m |
| Memphis MEM | 2.86 | 5.14 | 1,978 | 4h 41m |
| New Orleans MSY | 5.29 | 9 | 2,048 | 4h 42m |
| Raleigh RDU | 9.57 | 4 | 2,040 | 4h 55m |
| Nashville BNA | 13.57 | 5 | 1,959 | 5h 00m |
With 10.3 times a day on the nonstop, a connection here is a disruption plan rather than a routing, and it is listed because a closed runway or a cancellation wave is exactly when nobody has time to work it out.
46 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Birmingham BHM, where the weaker of the two legs still runs 3.1 times a day.
Through BHM the routing covers 1,955 km against the 1,942 km nonstop track and takes about 4h 30m in the air and on the ground at the hub, allowing 60 minutes to connect at an airport of that size.
That is only 1h 31m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Greenville GSP at 4h 39m and Memphis MEM at 4h 41m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Washington DC, Washington DC IAD is 38 km away by great circle and carries 270 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
If nothing suitable leaves Houston, Houston HOU is 38 km away by great circle and carries 145 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
Plan Washington DC to Houston yourself
The same tool the dispatchers use, open to anybody and free. It is loaded with this pair already. Change either end, add a stopover or a preferred airline, and it works out the connection, the transit and the door to door clock, with the real departures underneath. Put it on your own site if it is useful to you.
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Restrictions
Where this came from, and where to look next
- Carriers and frequencies: AeroDataBox scheduled route statistics, retrieved 2026-09-07. Average daily flights, not a timetable.
- Distances: great circle from published coordinates. They read short against a flown track, which is why the block time above applies a factor to them.
- Block and connection times: the same model the route calculator lower down this page runs, at the same rounding.
- Restrictions: the airport notes file, checked 2026-09-07.
- Industrial sites: public company information. Nothing here says or implies that any company named is a customer of any courier operator.
Who publishes this. OnBoard Courier is a placement desk in Dubai. An assignment is carried out by a vetted partner operator, with the desk as the single point of contact from the quote to the signature. This page exists because our own dispatchers need the answer for DCA to IAH in the twenty minutes before a promise is made, and a reference only one operator can read is not a reference. Free to read, quote and cite. Found an error? Tell us and we will correct it.
If you need something moved rather than looked up, the desk prices a hand carry in fifteen minutes.
- The DCA airport entry
- The IAH airport entry
- Hand carry into the United States
- The written lane, Doha to Houston
- The written lane, Dubai to Houston
- The written lane, Houston to Aberdeen
- The route calculator
More pairs through DCA and IAH: Boston to Washington DC, Washington DC to Atlanta, Detroit to Washington DC, Washington DC to Miami, Phoenix to Washington DC, Washington DC to Charlotte, Washington DC to Indianapolis, Washington DC to San Diego.