Atlanta (ATL) – Houston (IAH)
- Distance
- 1,109 km
- 689 mi · 599 nm
- Flight time
- 2 h 13 min / 2 h 4 min
- Average gate to gate: ATL → IAH / back
- Time difference
- 1 h
- CO2 per passenger
- 139 kg
- One way, economy, incl. RF (82 kg CO2 only)
- Passengers / year
- 1,430,755
- Aug 2025 – Jul 2026 · +2.5%
- Flights / week
- 200
- Both directions, average
- Seats filled
- 81%
- 1,767,969 seats a year
- Airlines nonstop
- 5
- DL, F9, UA
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
- 252°
- Heading from IAH
- 66°
- Halfway point
- 31.93, -89.99
- Great-circle km
- 1,108 km (sphere, for EU261)
- In the air ATL → IAH
- 1 h 43 min
- In the air IAH → ATL
- 1 h 33 min
- Clocks
- Houston is 1 h behind Atlanta
The estimate for a route without real times is 2 h 5 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 115,038 |
| Sep 2025 | 110,182 |
| Oct 2025 | 127,382 |
| Nov 2025 | 114,533 |
| Dec 2025 | 112,297 |
| Jan 2026 | 101,505 |
| Feb 2026 | 106,454 |
| Mar 2026 | 122,733 |
| Apr 2026 | 130,279 |
| May 2026 | 134,877 |
| Jun 2026 | 125,199 |
| Jul 2026 | 130,276 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 911 |
| Sep 2025 | 852 |
| Oct 2025 | 933 |
| Nov 2025 | 859 |
| Dec 2025 | 835 |
| Jan 2026 | 802 |
| Feb 2026 | 768 |
| Mar 2026 | 841 |
| Apr 2026 | 943 |
| May 2026 | 925 |
| Jun 2026 | 844 |
| Jul 2026 | 884 |
Airlines flying ATL–IAH nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| DLDelta Air Lines | 95 | 51% |
| F9Frontier Airlines | 30 | 20% |
| UAUnited Air Lines | 48 | 19% |
| NKSpirit Air Lines | 12 | 7% |
| YVMesa Airlines | 14 | 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 A321Neoxlr · 3,825 flights
- Airbus Industrie A320-100/200 · 2,171 flights
- Airbus Industrie A321-200n · 943 flights
- Airbus Industrie A319 · 922 flights
- Embraer ERJ-175 · 735 flights
- Airbus Industrie A320-200n · 557 flights
- Boeing 737-700/700LR/Max 7 · 457 flights
- Boeing 737-800 · 367 flights
Also carried: 713 tonnes of freight and 146 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 76.8%
- Arrived within 15 min of schedule
- Average delay
- 16 min
- Late arrivals count, early ones as 0
- Cancelled
- 1.9%
- Flights counted
- 9,845
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| DLDelta Air Lines | 77.9% | 15 min |
| UAUnited Air Lines | 83% | 12 min |
| F9Frontier Airlines | 66.2% | 26 min |
| NKSpirit Air Lines | 70.6% | 22 min |
Delay minutes by cause: airline 36% · aircraft arriving late 37% · air traffic system 25% · weather 3% · 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
- $211
- One way, all cabins
- Average over a year
- $197
- Q2 2025 – Q1 2026
- Largest airline
- Delta Air Lines
- 39% of passengers · $263
- Lowest-fare airline
- Spirit Air Lines
- 11% of passengers · $97
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $187 · Q3 2025 $185 · Q4 2025 $204 · Q1 2026 $211).
Fare outlook, Q1 2027: about $215, likely $191–$245
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 4.6%). 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: 1,108 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 Houston
Kilometres. Linked numbers have a page of their own. All Atlanta airports · All Houston airports