TPA to STI and TPA to POP via MIA. Same airline (AA), same date - 4 April. In both cases - the cheapest available airfare at this moment.
Tampa (TPA) to Puerto Plata (POP) - Fri, Apr 4
American Airlines Inc. Tampa (TPA) to Miami (MIA) - Fri, Apr 4
American Airlines Inc. 1161 Dep: 9:15AM Arr: 10:15AM 1h 0m Boeing 737 Economy (L)
Layover in MIA 1h 25m
American Airlines Inc. Miami (MIA) to Puerto Plata (POP) - Fri, Apr 4
American Airlines Inc. 935 Dep: 11:40AM Arr: 1:35PM 1h 55m Boeing 757 Economy (L)
Cost per passenger (including taxes & fees) $380.80
Total cost for 1 passenger $380.80
Now to fare break down -
Fare 1: Carrier AA LNE0C0Z1 TPA to POP (rules)
Passenger type ADT, one-way fare, booking code L
Covers TPA-MIA (Economy), MIA-POP (Economy)
$318.00
US September 11th Security Fee (AY) $5.00
US Passenger Facility Charge (XF) $9.00
US International Departure Tax (US) $17.50
Dominican Republic Airport Infrastructure Fee (VB) $16.30
Dominican Republic Airport Authority Fee (UX) $15.00
Subtotal per passenger $380.80
Number of passengers x1
Total airfare & taxes $380.80
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Tampa (TPA) to Santiago (STI) - Fri, Apr 4
American Airlines Inc. Tampa (TPA) to Miami (MIA) - Fri, Apr 4
American Airlines Inc. 2234 Dep: 3:45PM Arr: 4:50PM 1h 5m Boeing 737 Economy (N)
Layover in MIA 1h 5m
American Airlines Inc. Miami (MIA) to Santiago (STI) - Fri, Apr 4
American Airlines Inc. 2365 Dep: 5:55PM Arr: 7:55PM 2h 0m Boeing 757 Economy (N)
Cost per passenger (including taxes & fees) $158.80
Total cost for 1 passenger $158.80
Fare break down -
Fare 1: Carrier AA NNE4C0Z1 TPA to STI (rules)
Passenger type ADT, one-way fare, booking code N
Covers TPA-MIA (Economy), MIA-STI (Economy)
$96.00
US September 11th Security Fee (AY) $5.00
US Passenger Facility Charge (XF) $9.00
US International Departure Tax (US) $17.50
Dominican Republic Airport Infrastructure Fee (VB) $16.30
Dominican Republic Airport Authority Fee (UX) $15.00
Subtotal per passenger $158.80
Number of passengers x1
Total airfare & taxes $158.80
As you can see - taxes and fees are exactly same for POP and for STI. But fare base is VERY different. What's wrong with POP???