Calgary to Houston (YYC–IAH) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
YYC–IAH is served by 2 airlines with nonstop service. WestJet and United Airlines lead the route. The flight covers 1,748 miles in approximately 3h 25m. Beyond nonstop, 67 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| WS WestJet | 14 | 738, 73H | 4h10-4h15 | – | – | |
| UA United Airlines | 7 | 738 | 3h25 | Star Alliance | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Houston from Calgary
| Metric | YYC→IAH | YEG→IAH |
|---|---|---|
| Distance from YYC | – | 152 mi |
| Nonstop airlines | 2 | 3 |
| Weekly flights | 21 | 21 |
| Flight time | 3h 25m | 4h 34m |
| Departure OTP | 25% | – |
Travel Essentials
YYC: MDT · IAH: CDT
When it's 6:00 PM in Calgary, it's 7:00 PM in Houston.
Canadian citizens do not need a visa or ESTA to enter the United States for tourism or business stays up to 6 months. A valid Canadian passport is required for air travel. Land and sea crossings also accept a NEXUS card, enhanced driver's license, or FAST card. At the border, officers determine the length of stay and may ask for proof of ties to Canada and a return plan.
No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.
Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.
Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.
YYC–IAH Quick Facts
Frequently Asked Questions
Flights from YYC to IAH
Calgary International Airport (YYC) and George Bush Intercontinental Airport (IAH) are connected by nonstop service from United Airlines and WestJet. With 21 weekly departures, this is a well served route.
YYC to IAH Flight Duration and Schedule
Nonstop flight time from YYC to IAH ranges from 3 hours 25 minutes to 4 hours 15 minutes. The route covers a distance of 1,748 miles (2,813 km). There are approximately 21 weekly flights outbound and 21 return, totaling 42 flights per week in both directions.
Connecting Options and Alternatives
67 one-stop connections are available, with the fastest taking approximately 5 hours via MAF. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Edmonton (YEG).