Downtown Denver skyline from City Park with the Rocky Mountains behind. Flights from Houston to Denver

Route guide

Cheap Flights from Houston to Denver

Flying from Houston's IAH to Denver International? Check the IAH Terminal B change, PreCheck hours by terminal, and how to get from DEN into downtown Denver.

IAH to DEN · 862 mi · 2h 28m est.

IAH to DEN
862 miles
2h 28m nonstop (estimated)
3 airlines in our fare results

Photo: David Herrera, CC BY 2.0, via Wikimedia Commons

Houston to Denver flight insights

Average flight time

~2h 28m (estimated)

IAH → DEN

Cheapest cached price

$157

Checking live fares…

Prices shown may not be current. Last checked: Oct 4, 2026.

Planning a trip from Houston to Denver? The average flight time on this route is ~2h 28m (estimated). The lowest fare we recorded on this route recently was $157 (last checked Oct 4, 2026); today's live fare for your dates can differ.

Houston to Denver covers a straight-line distance of about 862 miles. Based on that distance, a nonstop flight would take approximately ~2h 28m (estimated). Actual flight time varies by airline, aircraft and routing.

Houston to Denver at a glance

IAH to DEN is about 862 miles in a straight line. The curved line is an illustration; the route your airline flies may differ.

Route Quick Facts

Quick facts for flights from Houston to Denver on Eazair
Origin	Houston (IAH)
Destination	Denver (DEN)
Average Flight Time	~2h 28m (estimated)
Current Lowest Fare	$157
Fares Last Checked	Oct 4, 2026
Distance	862 miles (IAH to DEN)
Time in Denver	1 hour behind Houston
Airlines in our fare results	3

Local time in Denver is 1 hour behind Houston. Houston is on Central Time, Denver on Mountain Time.

Flight deals from Houston to Denver

Here the search starts at George Bush Intercontinental (IAH) and ends at Denver International (DEN). Houston Hobby (HOU), about 11 miles southeast of downtown, is a separate airport, so check the departure code on each result. Delta, United and American have appeared in EazAir's fare checks for this route. At DEN, Delta uses Concourse A, United Concourses A and B, and American Concourse C. EazAir does not list airline terminals at IAH, so use your boarding pass or airline app.

IAH's Terminal B ticketing lobby is closed until late 2026, according to the airport's alerts page, so Terminal B flyers check in and clear security at Terminal C, then ride the Skyway to their gate. Drop-off is on Departures Level 2 at Terminals A, C and E. TSA PreCheck hours differ by terminal: Terminal A North 4 a.m. to 6 p.m., Terminal C North 4 a.m. to 10 p.m. and Terminal E 4 a.m. to 8 p.m. METRO Route 500 from downtown stops at Terminal E outside Door E201.

Arriving at DEN, the train from the concourses brings you to Jeppesen Terminal, where the RTD A Line leaves from the Transit Center on Level 1, beneath the Westin Denver International Hotel. DEN says trains run every 15 minutes and reach Union Station downtown in 37 minutes, and RTD charges an Airport Fare. Taxis wait at Level 5, Island 1, around the clock, and DEN says you can head straight there after baggage claim.

From 12 Sep to 5 Oct 2026, EazAir logged its first 4 fare checks for IAH to DEN, each for the lowest one-way economy fare for one adult on a flight 30 days after the check. Those 4 checks returned 3 different results, and the highest was less than one and a half times the lowest. Search your own dates, and check the final price, bags and fare rules on the partner site before you pay.

Airports for Houston to Denver flights

Departure · Houston

George Bush Intercontinental (IAH)

Central Time

Other airports near Houston: William P. Hobby (HOU)

Arrival · Denver

Denver International (DEN)

Mountain Time

About Denver

Areas to know in Denver

LoDo (Lower Downtown)
RiNo Art District
Capitol Hill

Weather in Denver

A semi-arid climate with over 300 sunny days a year; the high altitude keeps evenings cool even in summer, and winter brings snow to the nearby mountains.

Houston to Denver: airport and fare guide

Checked on 17 Oct 2026 against the airport, airline and transit pages listed under Sources. Airports and airlines change these details, so confirm them with your airline before you fly.

EazAir searches Houston with the IAH code, and Houston has more than one airport, so check the airport code on every result.

Houston Hobby (HOU) is a separate airport about 11 miles southeast of downtown.

Leaving from Houston George Bush Intercontinental (IAH)

METRO Route 500 IAH Downtown Direct links downtown Houston, including the George R. Brown Convention Center, with IAH, stopping at Terminal E, Level 2, outside Door E201.
IAH lists drop-off on Departures Level 2 at Terminals A, C and E, and on Level 1 at Terminal D.
Terminal B passengers check in, drop bags and clear security at Terminal C while the Terminal B ticketing lobby is closed, according to the airport's alerts page.
IAH lists TSA PreCheck at Terminal A North from 4 a.m. to 6 p.m., Terminal C North from 4 a.m. to 10 p.m. and Terminal E from 4 a.m. to 8 p.m., with CLEAR at Terminal A North and Terminal C.
The Terminal D checkpoint has modified hours that vary by day, so check IAH's security page, which also shows checkpoint wait times.

Arriving at Denver International (DEN)

Airline	DEN concourse
Delta	Concourse A
United	Concourses A and B
American	Concourse C
Other airlines	Check your boarding pass or airline app.

DEN's airline page shows no update date, so confirm your concourse on your boarding pass.

DEN has three concourses, A, B and C, beyond security. The train to the gates links them with Jeppesen Terminal.
The train leaves from a platform on Level 4. DEN says the ride from the terminal to the C Gates takes less than 10 minutes.
With an A gate boarding pass you can walk the A-Bridge, directly north of the security checkpoints, instead of taking the train.
In Jeppesen Terminal, even-numbered doors are on the west side and odd-numbered doors are on the east side.

Getting from DEN	Where to board	Where it goes
RTD A Line	Transit Center on Level 1, beneath the Westin Denver International Hotel. DEN says trains run every 15 minutes. RTD says trips to or from the airport need an Airport Fare.	Union Station in downtown Denver, 37 minutes according to DEN, with stops at 61st & Peña, 40th & Airport and 38th & Blake.
Rideshare	Level 5, Island 5, on the East or West side of the terminal. DEN says to order your ride after collecting your luggage.	Wherever you booked.
Taxis	Level 5, Island 1. DEN says taxis are available 24 hours a day and you can go straight to the stands after baggage claim.	Your destination.
Mountain carriers	Level 5, Island 4.	The carrier's own routes.
Hotel and rental car shuttles	Hotel shuttles pick up on Level 5. A free rental car shuttle runs from the Jeppesen Terminal pickup area.	Hotels and the off-site rental car counters.

What the lowest fares include

Fare	Carry-on	Checked bag	Seat	Changes
Delta Main Basic	Delta says every passenger can bring one carry-on and one personal item free.	Delta charges for checked bags on domestic flights unless you qualify for a waiver, such as Medallion status or an eligible Delta SkyMiles American Express card.	Assigned after check-in. You may be able to buy a seat ahead of time for a fee.	Refunds are not allowed after the 24-hour risk-free cancellation window. Delta says a change or cancellation may be possible for a fee, with any value left as an eCredit.
American Basic Economy	Included, plus a personal item.	Not included, except for some AAdvantage status members and eligible cardmembers.	A free seat is assigned at check-in, or you can pay to choose one.	Generally not allowed. American describes a 24-hour window and some credit options on its Basic Economy page.
United Basic Economy	Not included on domestic flights. One personal item only, unless you are a MileagePlus Premier member, travel with one, or hold a qualifying MileagePlus card.	Not included; check United's bag fee calculator.	Assigned by United before boarding.	Changes may not be allowed. Refund if cancelled within 24 hours of booking, under United's 24-hour policy; after that, partial travel credit.

Based on the airlines' own pages, checked on 17 Oct 2026. Fees are left out because they change often. Check the final price, bags and fare rules on the partner site before you pay.

How EazAir measured fares on this route

EazAir's first 4 fare checks from Houston to Denver ran from 12 Sep to 5 Oct 2026. Each check asked partner travel sites for the lowest one-way economy fare for one adult, departing 30 days after the check. Results can include connecting flights. The highest result was less than one and a half times the lowest. The 4 checks returned 3 different results. With only 4 checks, this cannot show a pattern. Search your own dates for current prices.

Sources

Houston Airports: IAH alerts (Terminal B lobby) (no date shown, accessed 17 Oct 2026)
Houston Airports: METRO Downtown Direct (no date shown, accessed 17 Oct 2026)
Houston Airports: IAH security (no date shown, accessed 17 Oct 2026)
Houston Airports: IAH pick up and drop off (no date shown, accessed 17 Oct 2026)
METRO: Airport bus nonstop (Route 500) (no date shown, accessed 17 Oct 2026)
DEN: Airlines (no date shown, accessed 17 Oct 2026)
DEN: Facilities (no date shown, accessed 17 Oct 2026)
DEN: To and from the airport (no date shown, accessed 17 Oct 2026)
DEN: East security checkpoint opens (4 Aug 2025, accessed 17 Oct 2026)
RTD: Airport (no date shown, accessed 17 Oct 2026)
Delta: Delta Main Basic (no date shown, accessed 17 Oct 2026)
Delta: Fares and discounts (no date shown, accessed 17 Oct 2026)
Delta: Carry-on baggage (no date shown, accessed 17 Oct 2026)
Delta: Bags (no date shown, accessed 17 Oct 2026)
American Airlines: Basic Economy (no date shown, accessed 17 Oct 2026)
United: Basic Economy FAQ (no date shown, accessed 17 Oct 2026)
EazAir fare checks for IAH to DEN, 12 Sep 2026 to 5 Oct 2026

Frequently asked questions

Does this page search Bush Intercontinental or Hobby?

It searches George Bush Intercontinental (IAH). Hobby (HOU) is a separate airport about 11 miles southeast of downtown Houston, so check the departure code on every result.

Where do I check in if my IAH gate is in Terminal B?

While the Terminal B ticketing lobby is closed, the airport's alerts page says Terminal B passengers check in, drop bags and clear security at Terminal C, then take the Skyway to the gate.

How long is the train from Denver airport to downtown?

DEN lists 37 minutes on the RTD A Line from the Transit Center on Level 1 to Union Station, with trains every 15 minutes. RTD says an Airport Fare applies.

Where is rideshare pickup at DEN?

Uber and Lyft pick up at Level 5, Island 5, on the East or West side of the terminal. DEN suggests ordering your ride after you collect your luggage.

Do Delta, United and American basic fares include a carry-on?

Delta and American say yes: Main Basic and Basic Economy both allow a carry-on plus a personal item. United Basic Economy includes only a personal item on domestic flights unless a MileagePlus exception applies.

How far is it from IAH to DEN?

IAH and DEN are about 862 miles apart in a straight line. Flight times vary by airline, direction and routing, so check the scheduled time shown with each result.

Airline bag fees

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

Checked bag fees from each airline's own website
Airline	Carry-on, basic economy	1st checked bag	2nd checked bag	Source
American Airlines	Included	$45	$55	aa.com, Sep 24, 2026
United Airlines	Not included	$40	$50	united.com, Sep 24, 2026
Delta Air Lines	Included	$45	$55	delta.com, Sep 24, 2026
JetBlue	Included	$45	$59	jetblue.com, Sep 24, 2026
Alaska Airlines	Included	$45	$55	alaskaair.com, Sep 24, 2026
Frontier Airlines	Not included	Varies	Varies	flyfrontier.com, Sep 24, 2026
Sun Country Airlines	Not included	Varies	Varies	suncountry.com, Sep 24, 2026

Domestic US fees per bag, each way, when paid online in advance. "Varies" means the airline prices bags by route and date.

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure. Checking in early can help with seat selection and, on some airlines, boarding group assignment.