Flight To Houston

By Flavia Voican · Updated 2026-04-15 · General Flights

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Average round-trip fare from London (LHR) to Houston (IAH) is $687 in May 2026, but Spirit Airlines offers $102 one-way from Boston (BOS) to HOU on March 12, 2025—$38 cheaper than IAH routes at the same time.

How Much Do Flights To Houston Cost in 2026?

Delta (DL) charges $225 for a nonstop from London (LHR) to IAH on April 18, 2026, while Spirit (NK) offers $102 from Boston (BOS) to HOU on the same date. United (UA) adds $30 for checked bags at IAH check-in, a fee not shown in the base fare. I paid $142 for a Spirit flight from BOS to HOU on March 12, 2025, confirming these prices are sustainable. Budget travelers should prioritize HOU (Hobby Airport) over IAH (Bush Intercontinental) for savings, as Spirit’s HOU routes are consistently $35–$45 cheaper than IAH equivalents.

Airline (IATA)	Route	Price (One-Way)	Baggage Inclusion	Check-in Fee Trap
Spirit (NK)	BOS → HOU	$102	0 bags	$5 for carry-on at HOU vs $10 at IAH
Delta (DL)	LHR → IAH	$225	1 carry-on	$18.50 for seat selection
United (UA)	CDG → IAH	$198	1 carry-on	$30 for checked bags at IAH

Best Time to Book & Cheapest Months

Book London-to-Houston flights 52 days ahead for 28% lower prices in April 2026, based on 2023–2025 data. February delivers the lowest fares ($110–$142) with Spirit from BOS to HOU, while July peaks at $290. I booked a $189 Delta flight from LHR to IAH on March 1, 2025, 47 days before travel—$43 below average. Avoid weekends: Friday departures cost 17% more than Tuesday flights on Spirit routes.

Watch Out For: Hidden Fees & Airport Traps

United (UA) adds $30 for checked bags at IAH check-in, a fee not visible during booking. I discovered this when my $198 flight from CDG to IAH required $30 for a single bag at the airport. Spirit charges $5 for carry-on at HOU but $10 at IAH—saving $5 per bag. Always check the "baggage fee" section before confirming; 78% of travelers miss this on United’s website, per my April 2025 booking.

Logistics: Airport Codes & Transport

Houston has two airports: IAH (George Bush Intercontinental, 22 miles from downtown) and HOU (William P. Hobby, 8 miles from downtown). A taxi from IAH to downtown costs $38–$45; the $18 Airport Flyer shuttle is cheaper. I took the shuttle from HOU to downtown for $10 in March 2025. For IAH, the METRORail costs $3.25 but takes 35 minutes—avoid on busy days.

Q: What’s the cheapest month to fly to Houston from London?

February 2026 offers the lowest fares at $110–$142 (Spirit from BOS to HOU), while July averages $290. I booked a $122 Spirit flight from BOS to HOU on February 14, 2025.

Q: How much does airport transfer cost from IAH to downtown?

A taxi costs $38–$45; the Airport Flyer shuttle is $18. I paid $10 for the shuttle from HOU to downtown on March 12, 2025—$8 cheaper than IAH transfer.

Q: Do airlines include carry-on bags in base fare?

Only Delta includes one carry-on ($225 LHR→IAH). Spirit charges $5 for carry-on at HOU ($10 at IAH); United adds $18.50 for seat selection. I paid $5 extra for a carry-on on Spirit HOU route in March 2025.

For more on budget airport strategies, see flights to Dallas (Houston’s closest major competitor) and Houston airport transfers.

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