Cheap Flights from Houston to Kolkata
Houston (IAH) → Kolkata (CCU) · 19–25 hours
Flights from Houston (IAH) to Kolkata (CCU) are operated by Emirates, Qatar Airways, Etihad, Air India, Lufthansa and British Airways among others, with a single connection at a Gulf hub such as Doha, Dubai or Abu Dhabi, or eastbound through Europe. Total journey time is typically 19–25 hours. You depart from George Bush Intercontinental (IAH) and arrive at Netaji Subhas Chandra Bose International (CCU).
| Departure airport | George Bush Intercontinental (IAH) |
|---|---|
| Arrival airport | Netaji Subhas Chandra Bose International (CCU) |
| Main airlines | Emirates, Qatar Airways, Etihad, Air India, Lufthansa and British Airways |
| Routing | A single connection at a Gulf hub such as Doha, Dubai or Abu Dhabi, or eastbound through Europe |
| Journey time | 19–25 hours |
| When to book | Two to four months ahead for ordinary travel, and six months or more for December, the summer school holidays and the Indian wedding season, when the cheapest fare buckets are gone long before the date approaches |
Flying out of Houston Intercontinental
Houston Intercontinental is United's Gulf and Latin America hub, and its Middle East service makes it a strong one-stop gateway to South Asia — Gulf carriers connect IAH onward to virtually every Indian and Bangladeshi city through their own hubs. Sugar Land, Katy and Pearland hold one of the largest South Asian populations in the South, and the corridor is competitive enough that consolidator fares out of IAH often beat the published fare from a nominally better-connected coastal airport.
What to know before you fly to Kolkata
Entry requirements for US travellers
An Indian visa is required for US passport holders, with the e-Visa covering most visits and OCI cardholders travelling on their OCI. Verify current requirements on the official Indian government portal.
Best time to go
October to March is the pleasant season and includes Durga Puja, when demand from the diaspora is at its absolute peak and fares are booked out months ahead. Summer and the monsoon are hot and humid but much cheaper.
Airports and arrival
Netaji Subhas Chandra Bose International (CCU) serves eastern India and is the practical gateway for Bengal, the north-east and onward travel to Bangladesh and Bhutan.
Baggage
Kolkata routings usually involve a Gulf or European connection; allowances vary, and we confirm them before you book rather than at check-in.
Airlines from Houston to Kolkata
Itineraries offer a single connection at a Gulf hub such as Doha, Dubai or Abu Dhabi, or eastbound through Europe.
Getting the best price to Kolkata
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Houston to Kolkata — frequently asked questions
Fares on the Houston–Kolkata route vary widely by season and how far ahead you book. We do not publish an estimate we have not measured for this pair; call our agents and they will quote the live consolidator fare for your dates.
Carriers on this route include Emirates, Qatar Airways, Etihad, Air India, Lufthansa and British Airways. Others serve it on one-stop itineraries, and the cheapest is not always a name you would expect — the lowest fare we have tracked here was on a carrier outside that list more than once. Itineraries offer a single connection at a Gulf hub such as Doha, Dubai or Abu Dhabi, or eastbound through Europe, and total journey time runs about 19–25 hours. Which carrier is cheapest changes with the season and the fare bucket rather than staying fixed, which is why we compare them all on every quote.
Plan on 19–25 hours from George Bush Intercontinental (IAH) to Netaji Subhas Chandra Bose International (CCU), including time on the ground if your itinerary connects.
Book two to four months ahead for ordinary travel, and six months or more for December, the summer school holidays and the Indian wedding season, when the cheapest fare buckets are gone long before the date approaches.
No — every itinerary from Houston to Kolkata connects at least once, with a single connection at a Gulf hub such as Doha, Dubai or Abu Dhabi, or eastbound through Europe. Which connection is best is not just about total time: the length of the layover, whether you change terminals, and whether both legs are on one ticket all matter more than the headline duration. We compare them rather than sorting by price alone.
Bush Intercontinental (IAH) is Houston's international airport; Hobby (HOU) is domestic and largely Southwest. Nearly every long-haul option departs IAH, so the real question here is terminal rather than airport — international departures use Terminal D or E, and the inter-terminal transfer is worth building time for on a tight connection.
This is the corridor where it matters most. US–South Asia fares carry the widest gap between the published price and the consolidator price of anything we sell, the itineraries are long enough that a better connection is worth real money, and baggage rules differ enough between carriers to change which fare is actually cheaper once you have paid for your bags. All three are things a search box cannot weigh for you. SkyKaro's agents are reachable 24/7, and nothing is charged until an agent has confirmed the itinerary and the price with you.