If your city has more than one airport, you have more than one airfare market. The same destination, the same trip length, the same week — priced from two airports thirty minutes apart — can differ by hundreds of dollars. Checking the "other" airport is the cheapest upgrade in travel: it costs one extra search.
A real example from our data
Right now, flying Miami → Denver (DEN) as a 7-night nonstop round-trip:
Same metro, same destination, same trip length — $289 (57%) more from FLL than from MIA. Search only your "default" airport and you'd never see it.
Why airports in the same city price so differently
- Different airlines dominate different airports. A low-cost carrier's home field (Midway, Dallas Love, Fort Lauderdale) prices against its own network, not the legacy hub next door.
- Nonstop coverage differs. Your destination may be a frequent nonstop from one airport and a once-a-day premium route from the other.
- Each route's demand is its own market. A convention or school break can spike one airport's fares while the neighbor stays quiet.
The multi-airport cities to know
These are the metros where the swap is always worth a check:
| Metro | Airports |
|---|---|
| New York | JFK · LGA · EWR |
| Los Angeles | LAX · BUR |
| Chicago | ORD · MDW |
| San Francisco | SFO · OAK · SJC |
| Washington DC | DCA · IAD · BWI |
| Miami | MIA · FLL |
| Houston | IAH · HOU |
| Dallas | DFW · DAL |
Internationally the same applies to Toronto, Mexico City, London, Paris and every other multi-airport metro.
How to run the swap in one search
- Search your trip from airport #1 — flexible window, your usual airport.
- Repeat from airport #2. Same destination, same window. The form remembers your settings, so it's a ten-second change.
- Compare the cheapest result from each. Factor in the ground transfer — a $40 train ride that saves $200 in airfare is a trade you take.
- Search flexible dates from your airport — run it once per airport and compare.
- Find Deals from your airport — check it for each of your metro's airports; the below-typical fares rarely line up.
Your "home airport" is a habit, not a rule. Two searches instead of one, and the other airport pays for your hotel.