Nonstop route
Dallas-Fort Worth to Houston nonstop
Yes — United and American fly DFW to IAH nonstop year-round — about 15× daily.
DFWDallas-Fort Worth
✈
IAHHouston
15× daily104.3 flights a week
Year-round104.3/wk Jun vs 98/wk Jan
$150–$275typical one-way · median $200
224miles nonstop
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Fares are what people actually paid: half of the 3,801 tickets in the US DOT fare survey for this route sold between $150 and $275 one way, median $200. That survey runs a couple of quarters behind, so treat it as the shape of the route's pricing rather than today's quote.
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