Flexible on Where You Go? What That Is Actually Worth, by Airport

Every cheap-flight guide gives the same advice: be flexible about where you go. Almost none of them tell you what that flexibility is worth, and it turns out to vary by more than five times depending on which airport you leave from.

We priced 1,037 transatlantic fares across 26 US gateways in a single day. Here is the gap, at each one, between what Europe typically costs and what its cheapest European city costs.

What flexibility is worth, airport by airport

US gateway	Median to Europe	Its cheapest city	Flexibility is worth
Portland	$747	$432 Stockholm	$315
Nashville	$743	$445 Stockholm	$298
Minneapolis	$731	$443 Helsinki	$288
Raleigh	$709	$436 Stockholm	$273
Washington DC	$651	$388 Helsinki	$263
Denver	$713	$452 Reykjavik	$261
Seattle	$665	$418 Stockholm	$247
Orlando	$629	$405 London	$224
Boston	$598	$390 Helsinki	$208
Chicago	$652	$468 Reykjavik	$184
Las Vegas	$760	$590 Berlin	$170
Austin	$792	$634 Reykjavik	$158
New York	$574	$422 Reykjavik	$152
San Diego	$784	$643 Reykjavik	$141
Philadelphia	$738	$611 Reykjavik	$127
Detroit	$757	$630 Reykjavik	$127
Miami	$646	$526 Paris	$120
Charlotte	$749	$631 Venice	$118
Los Angeles	$666	$560 Barcelona	$106
Tampa	$768	$680 Dublin	$88
Salt Lake City	$782	$694 Stockholm	$88
Dallas	$750	$667 Naples	$83
Atlanta	$690	$608 Oslo	$82
Phoenix	$778	$699 Madrid	$79
Houston	$768	$691 Barcelona	$77
San Francisco	$671	$611 Malta	$60

Portland $315. San Francisco $60. The same advice, five times more valuable at one airport than the other.

The airports where it does not pay

Start at the bottom, because that is where the advice most needs correcting.

From San Francisco, the median European fare is $671 and the cheapest city in Europe is Malta at $611. Sixty dollars. There is no clever destination that rescues a San Francisco fare — every European city costs roughly the same from there, and a guide telling that traveler to "go wherever is cheapest" is wasting their time.

Houston ($77), Phoenix ($79), Atlanta ($82) and Dallas ($83) are the same story. These are large, well-connected airports with broad, evenly-priced connecting networks to Europe, and evenness is exactly what kills the value of flexibility.

If you fly from one of these, the levers that work are different ones: when you go, and which airport you leave from. Our country analysis found Orlando beating New York to Spain and Boston beating it to France, which is the same lever pointed at a different target.

The airports where it pays enormously

At the other end, Portland, Nashville, Minneapolis, Raleigh and Washington DC all clear $260, and none of them is a major transatlantic hub.

That is the tell. These airports are not cheap to Europe in general — Portland ranks 16th of 26 on median and Nashville 15th. What they have is one exceptional route sitting next to an ordinary network, and the exceptional route is nearly always the same kind of route.

The mechanism is one Nordic flight

Sort the 26 gateways by spread and split them in half:

• Of the 13 widest, 11 have a Nordic or Icelandic city as their cheapest destination.
• Of the 13 narrowest, only 5 do.
• Median spread where the cheapest city is Nordic: $208. Where it is not: $106.

A wide spread is, in practice, a Stockholm fare. Or Helsinki, or Reykjavik, or Oslo.

This is the same effect our Nordic pillar found from the opposite direction: that Nordic fares are a carrier effect rather than a geography effect, which is why airports as far south as Raleigh and Nashville reach Stockholm for under $450 while airports further north do not. Here it shows up as a property of the departure airport instead of the destination — the gateways that reward flexibility are the ones with a cheap Nordic route, and almost nothing else.

Which reframes the advice. "Be flexible about where you go" is really "check whether your airport has a Nordic bargain." If it does, flexibility is worth $200–$300. If it does not, it is worth $60 and you should stop reading listicles about it.

What to actually do

If your airport is in the top third of that table — spread above about $250 — price Stockholm, Helsinki, Reykjavik and Oslo before anything else, every time. That is where your money is, and it is not close.

If it is in the bottom third — spread under about $90 — accept that destination shopping will not save you and put the effort into dates and departure airport instead. From San Francisco, moving your trip a month is worth more than moving it a country.

If it is in the middle, both levers are live and worth roughly the same. New York at $152 is the archetype: cheapest gateway in the country on median, with a Reykjavik fare $152 below its own typical.

Three flat airports in detail

San Francisco, Atlanta and Dallas are the clearest examples of the flat-network shape, and each is a large airport whose travelers get told the wrong thing. Here is what the grid actually says about them.

Gateway	Rank of 26	Median	Its four cheapest cities	Gap 1st to 4th
San Francisco	9th	$671	Malta $611, Seville $617, Stockholm $617, Dublin $618	$7
Atlanta	10th	$690	Oslo $608, Malta $611, Stockholm $626, Helsinki $654	$46
Dallas	18th	$750	Naples $667, Barcelona $673, Dublin $683, Dubrovnik $686	$19

Look at that last column. From San Francisco the four cheapest cities in Europe are separated by seven dollars. Malta, Seville, Stockholm and Dublin — four countries, four climates, four completely different trips, and a fare difference you would lose in a checked bag.

Dallas is nearly as flat at $19, and Atlanta at $46. For a traveler from any of the three, the entire premise of destination shopping collapses: there is no cheap city to find because they are all the same price.

None of the three beats New York on more than one European city. San Francisco wins exactly one of forty, Edinburgh, by nine dollars. Atlanta and Dallas win none at all. That is not a criticism of the airports — Atlanta ranks 10th of 26 on median and is perfectly reasonable to fly from — it is a statement that their advantage, if they have one, is not in destination choice.

What these three should do instead is straightforward. Watch dates rather than destinations, because a shoulder-season week is worth far more than a different country. And price the nearest wide-spread gateway before assuming you have to leave from home — Washington's $263 spread is the fifth-widest in the country, and a positioning flight is worth pricing whenever the gap is larger than the fare to get there.

Method, and one deliberate choice

Spread here is median minus minimum, not maximum minus minimum.

That is on purpose. Maximum-minus-minimum would be dominated by whatever the single most expensive city happens to be — Mykonos at $965, say — which tells you about one Greek island rather than about your airport. Median-minus-minimum answers the question a traveler is actually asking: how far below normal can I get if I am willing to go somewhere else?

It is the same reasoning that makes every ranking on this site use the median rather than the minimum. A minimum is a fact about one route on one day; a median is a fact about the airport.

All fares are the cheapest one-week economy round trip found on August 30, 2026 for departure in the following six months. Off-season, so summer roughly doubles the level — though the shape, which is what this page is about, is more stable than the level.

Where to go from here

• The Nordic discount — why Stockholm and Helsinki are cheap from unexpected airports.
• The cheapest places to fly in Europe — the full grid behind this.
• The cheapest countries — the same question grouped by country, where New York loses half of them.
• Which airport to fly into — flexibility one level down, within a city.