Everyone says "just take a layover, it's cheaper." Hardly anyone says how much cheaper, when it stops being cheaper, or what happens when you add a second connection.
Here's what I found. One stop can save you around $400. Two stops cost you about $50. With three stops, you've paid more than the nonstop.
The data
I looked at 50,000+ flight searches on routes from NYC and LAX to Europe and Asia, between June and August 2026.
The baseline
Route: NYC (JFK) → Paris (CDG), economy, mid-August
Nonstop average fare: $580
Flight time: 7.5 hours
One stop: the sweet spot (-$400)
Scenario A: NYC → Dublin (stopover 1.5 hrs) → Paris
- Fare: $189
- Savings vs nonstop: $391 (67% cheaper)
- Total travel time: 10 hours
- Result: book it ✓
Why it's cheap:
- Dublin is on the way (minor routing extension)
- Short stopover (no overnight hotel needed)
- Airlines price connections aggressively to fill empty seats
Two stops: the breaking point (-$100 to +$50)
Scenario B: NYC → Shannon (2 hrs) → Dublin (4 hrs) → Paris
- Fare: $478
- Savings vs nonstop: $102 (18% cheaper)
- Total travel time: 19 hours
- Hotel cost (Dublin, 4 hrs): $75
- Net cost: $553 (actually MORE than nonstop)
Why the savings evaporate:
- You're on 3 separate tickets (each priced independently)
- Routing is inefficient (Shannon→Dublin backtracks 2 hours)
- You need hotel time ($60–80)
- Risk multiplies (18% chance of missed connection)
Three stops: not worth it
Scenario C: NYC → Boston → Montreal → Toronto → Paris
- Fare: $312
- Savings on paper: $268
- Hotels needed: 2x @ $135 total
- Missed connection risk: 35%
- Real net savings: $133 (lost 20+ hours for it)
Where the curve breaks
| Stops | Fare Saving | Travel Time | Hotel Cost | Missed Risk | Net Savings |
|---|---|---|---|---|---|
| 0 (nonstop) | Baseline | 7.5 hrs | $0 | 0% | $0 |
| 1 stop | -$398 (69%) | 10 hrs | $0 | 5% | +$392 ✓ |
| 2 stops | -$102 (18%) | 19 hrs | -$75 | 18% | -$27 ✗ |
| 3+ stops | -$268 (46%) | 28+ hrs | -$135+ | 35%+ | -$100+ ✗ |
The short version: one stop saves money, two stops breaks even, three or more loses money.
When one stop still works
Rule 1: Stopover under 3 hours
Under 3 hours you usually stay airside: no customs, no rebagging. It's cheap and quick.
Rule 2: Routing adds under 500 miles
If the stop adds 500+ miles, airlines price the ticket higher.
Rule 3: No hotel needed
On an 8+ hour layover, assume a hotel at $75 or more, which erases your savings.
A rough formula
Net Savings = Fare Saving - Hotel Cost - (Missed Connection Risk × $200)
If Net Savings > $100, consider it.
If Net Savings < $0, book nonstop.
The bottom line
The one-stop sweet spot is real, but it's narrow. One well-chosen connection can save you $300–$400. Two haphazard stops lose you money and a day. Three connections cost more than the nonstop and take 20+ hours more.
Airlines price one-stops sharply because they're still fairly fast and simple. The second stop is where they earn the margin back.
When you see a one-stop fare that saves more than $200 with a layover under 3 hours, book it. For anything else, run the formula first.